Edgar Filing: SPO ADVISORY CORP

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 8)*

LAMAR ADVERTISING COMPANY
(Name of Issuer)

CLASS A COMMON STOCK, PAR VALUE $0.001 PER SHARE
(Title of Class of Securities)

512815101
(CUSIP Number)

SPO Advisory Corp.
591 Redwood Highway, Suite 3215
Mill Valley, California 94941
(415) 383-6600

with a copy to:

Alison S. Ressler
Sullivan & Cromwell LLP
1888 Century Park East
Los Angeles, California 90067-1725
(310) 712-6600

(Name, Address and Telephone Number of Person Authorized to
Receive Notices and Communications)

June 27, 2008
(Date of Event which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
Schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
[_].

Note. Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

Page 1 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON SPO Partners II, L.P.
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS WC
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
14,792,684 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
14,792,684 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
14,792,684
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
19.2%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
PN
--------------------------------------------------------------------------------

(1) Power is exercised through its sole general partner, SPO Advisory Partners,
L.P.

CUSIP No. 512815101 Page 2 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON SPO Advisory Partners, L.P.
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS Not Applicable
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
14,792,684 (1)(2)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
14,792,684 (1)(2)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
14,792,684
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
19.2%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
PN
--------------------------------------------------------------------------------

(1) Solely in its capacity as the sole general partner of SPO Partners II, L.P.
(2) Power is exercised through its sole general partner, SPO Advisory Corp.

CUSIP No. 512815101 Page 3 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
San Francisco Partners II, L.P.
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
WC
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
California
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
735,730 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
735,730 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
735,730
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
1.0%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
PN
--------------------------------------------------------------------------------

(1) Power is exercised through its sole general partner, SF Advisory Partners,
L.P.

CUSIP No. 512815101 Page 4 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
SF Advisory Partners, L.P.
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
Not Applicable
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
735,730 (1)(2)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
735,730 (1)(2)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
735,730
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
1.0%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
PN
--------------------------------------------------------------------------------

(1) Solely in its capacity as the sole general partner of San Francisco
Partners II, L.P.
(2) Power is exercised through its sole general partner, SPO Advisory Corp.

CUSIP No. 512815101 Page 5 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
SPO Advisory Corp.
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
Not Applicable
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
15.528,414 (1)(2)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
15,528,414 (1)(2)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
15,528,414
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
20.2%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
CO
--------------------------------------------------------------------------------

(1) Solely in its capacity as the sole general partner of SPO Advisory
Partners, L.P. with respect to 14,792,684 of such shares; and solely
in its capacity as the sole general partner of SF Advisory Partners, L.P.
with respect to 735,730 of such shares.

(2) Power is exercised through its three controlling persons, John H. Scully,
William E. Oberndorf and William J. Patterson.

CUSIP No. 512815101 Page 6 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
John H. Scully
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
Not Applicable
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
USA
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
303,300 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED 15,528,414 (2)
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
303,300 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
15,528,414 (2)
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
15,831,714
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
20.6%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
IN
--------------------------------------------------------------------------------

(1) Of these shares, 18,700 shares are held in the John H. Scully Individual
Retirement Accounts, which are self-directed, and 284,600 shares may be
deemed to be beneficially owned by Mr. Scully solely in his capacity as
controlling person, sole director and executive officer of Phoebe Snow
Foundation, Inc.

(2) These shares may be deemed to be beneficially owned by Mr. Scully solely
in his capacity as one of three controlling persons of SPO Advisory Corp.

CUSIP No. 512815101 Page 7 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
William E. Oberndorf
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
Not Applicable
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
USA
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
26,700 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED 15,528,414 (2)
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
26,700 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
15,528,414 (2)
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
15,555,114
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
20.2%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
IN
--------------------------------------------------------------------------------

(1) These shares are held in the William E. Oberndorf Individual Retirement
Account, which is self-directed.

(2) These shares may be deemed to be beneficially owned by Mr. Oberndorf solely
in his capacity as one of three controlling persons of SPO Advisory Corp.

CUSIP No. 512815101 Page 8 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
William J. Patterson
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
Not Applicable
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
USA
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
1,700 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED 15,579,214 (2)
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
1,700 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
15,579,214 (2)
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
15,580,914
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
20.3%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
IN
--------------------------------------------------------------------------------

(1) These shares are held in the William J. Patterson Individual Retirement
Account, which is self directed.

(2) Of these shares, 15,528,414 shares may be deemed to be beneficially owned by
Mr. Patterson solely in his capacity as one of three controlling persons of
SPO Advisory Corp. and 50,800 shares may be deemed to be beneficially owned
by Mr. Patterson solely in his capacity as a controlling person, director
and executive officer of The Elizabeth R. & William J. Patterson Foundation.

CUSIP No. 512815101 Page 9 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
Phoebe Snow Foundation, Inc.
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
WC
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) OR 2(e) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
California
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
284,600 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
284,600 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
284,600
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.4%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
CO
--------------------------------------------------------------------------------

(1) Power is exercised through its controlling person, sole director and
executive officer, John H. Scully.

CUSIP No. 512815101 Page 10 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
The Elizabeth R. & William J. Patterson Foundation
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
WC
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) OR 2(e) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
California
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
50,800 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
50,800 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
50,800
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.1%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
CO
--------------------------------------------------------------------------------

(1) Power is exercised through its controlling persons, directors and executive
officers, William J. Patterson and Elizabeth R. Patterson.

CUSIP No. 512815101 Page 11 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
Eli J. Weinberg
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
PF
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) OR 2(f) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
USA
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
126
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
126
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
126
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
**0.1%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
IN
--------------------------------------------------------------------------------

** Denotes less than.

CUSIP No. 512815101 Page 12 of 28 pages

--------------------------------------------------------------------------------
1. NAME OF REPORTING PERSON
Ian R. McGuire
--------------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) [_]
(b) [X]
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. SOURCE OF FUNDS
PF
--------------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) OR 2(e) [_]
--------------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION
USA
--------------------------------------------------------------------------------
7. SOLE VOTING POWER
1,156 (1)
------------------------------------------------------
NUMBER OF SHARES 8. SHARED VOTING POWER
BENEFICIALLY OWNED -0-
BY EACH REPORTING ------------------------------------------------------
PERSON WITH 9. SOLE DISPOSITIVE POWER
1,156 (1)
------------------------------------------------------
10. SHARED DISPOSITIVE POWER
-0-
--------------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,156
--------------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES [_]
--------------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
**0.1%
--------------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON
IN
--------------------------------------------------------------------------------

** Denotes less than.

(1) Of these shares, 256 shares are held in the Ian R. McGuire Individual
Retirement Account, which is self-directed.

Page 13 of 28 pages

This Amendment No. 8 amends the Schedule 13D (the "Original 13D") filed
with the Securities and Exchange Commission ("SEC") on August 22, 2005 and as
amended on May 10, 2006, July 19, 2006, July 31, 2007, October 2, 2007, March
21, 2008, April 15, 2008 and June 26, 2008. Unless otherwise stated herein, the
Original 13D, as previously amended, remains in full force and effect. Terms
used therein and not defined herein shall have the meanings ascribed thereto in
the Original 13D.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

Item 3 is hereby amended and restated in its entirety as follows:

The source and amount of the funds used or to be used by the Reporting
Persons to purchase Shares are as follows:

NAME SOURCE OF FUNDS AMOUNT OF FUNDS
--------------------- --------------------------- ---------------

SPO Contributions from Partners $628,875,233
SPO Advisory Partners Not Applicable Not Applicable
SFP Contributions from Partners $30,762,451
SF Advisory Partners Not Applicable Not Applicable
SPO Advisory Corp. Not Applicable Not Applicable
JHS Not Applicable and Personal Funds $778,865
WEO Not Applicable and Personal Funds $918,016
WJP Not Applicable and Personal Funds $66,412
PS Foundation Contributions from Shareholders $15,077,638
Patterson Foundation Contributions from Shareholders $1,980,615
EJW Personal Funds $5,672
IRM Personal Funds $55,943

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

(a) Percentage interest calculations for each Reporting Person are
based upon the Issuer having 76,991,663 total outstanding shares of Class A
common stock as reported on the Issuer's 10-Q filed with the Securities and
Exchange Commission on May 8, 2008.

SPO

The aggregate number of Shares that SPO owns beneficially, pursuant to
Rule 13d-3 of the Act, is 14,792,684 Shares, which constitutes approximately
19.2% of the outstanding Shares.

SPO Advisory Partners

Because of its position as the sole general partner of SPO, SPO
Advisory Partners may, pursuant to Rule 13d-3 of the Act, be deemed to be the
beneficial owner of 14,792,684 Shares, which constitutes approximately 19.2% of
the outstanding Shares.

SFP

The aggregate number of Shares that SFP owns beneficially, pursuant to
Rule 13d-3 of the Act, is 735,730 Shares, which constitutes approximately 1.0%
of the outstanding Shares.

Page 14 of 28 pages

SF Advisory Partners

Because of its position as the sole general partner of SFP, SF Advisory
Partners may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial
owner of 735,730 Shares, which constitutes approximately 1.0% of the outstanding
Shares.

SPO Advisory Corp.

Because of its positions as the sole general partner of each of SPO
Advisory Partners and SF Advisory Partners, SPO Advisory Corp. may, pursuant to
Rule 13d-3 of the Act, be deemed to be the beneficial owner of 15,528,414 Shares
in the aggregate, which constitutes approximately 20.2% of the outstanding
Shares.

JHS

Individually, and because of his positions as a control person of SPO
Advisory Corp. and controlling person, sole director and executive officer of PS
Foundation, JHS may, pursuant to Rule 13d-3 of the Act, be deemed to be the
beneficial owner of 15,831,714 Shares, which constitutes approximately 20.6% of
the outstanding Shares.

WEO

Individually and because of his position as a control person of SPO
Advisory Corp., WEO may, pursuant to Rule 13d-3 of the Act, be deemed to be the
beneficial owner of 15,555,114 Shares, which constitutes approximately 20.2% of
the outstanding Shares.

WJP

Individually and because of his position as a control person of SPO
Advisory Corp. and as a control person, director and executive officer of
Patterson Foundation, WJP may, pursuant to Rule 13d-3 of the Act, be deemed to
be the beneficial owner of 15,580,914 Shares, which constitutes approximately
20.3% of the outstanding Shares.

PS FOUNDATION

The aggregate number of Shares that PS Foundation owns beneficially,
pursuant to Rule 13d-3 of the Act, is 284,600 Shares, which constitutes
approximately 0.4% of the outstanding Shares.

Page 15 of 28 pages

PATTERSON FOUNDATION

The aggregate number of Shares that Patterson Foundation owns
beneficially, pursuant to Rule 13d-3 of the Act, is 50,800 Shares, which
constitutes approximately 0.1% of the outstanding Shares.

EJW

The aggregate number of Shares that EJW owns beneficially, pursuant to
Rule 13d-3 of the Act, is 126 Shares, which constitutes less than 0.1% of the
outstanding Shares.

IRM

The aggregate number of Shares that IRM owns beneficially, pursuant to
Rule 13d-3 of the Act, is 1,156 Shares, which constitutes less than 0.1% of the
outstanding Shares.

To the best of the knowledge of each of the Reporting Persons, other
than as set forth above, none of the persons named in Item 2 hereof is the
beneficial owner of any Shares.

(b)

SPO

Acting through its sole general partner, SPO has the sole power to vote
or to direct the vote and to dispose or to direct the disposition of 14,792,684
Shares.

SPO Advisory Partners

Acting through its sole general partner and in its capacity as the sole
general partner of SPO, SPO Advisory Partners has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 14,792,684
Shares.

SFP

Acting through its sole general partner, SFP has the sole power to vote
or to direct the vote and to dispose or to direct the disposition of 735,730
Shares.

SF Advisory Partners

Acting through its sole general partner and in its capacity as the sole
general partner of SFP, SF Advisory Partners has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 735,730 Shares.

SPO Advisory Corp.

Acting through its controlling persons and in its capacities as the
sole general partner of each of SPO Advisory Partners and SF Advisory Partners,
SPO Advisory Corp. has the sole power to vote or to direct the vote and to
dispose or to direct the disposition of 15,528,414 Shares in the aggregate.

Page 16 of 28 pages

JHS

As one of three controlling persons of SPO Advisory Corp., which is the
sole general partner of each of SPO Advisory Partners and SF Advisory Partners,
JHS may be deemed to have shared power with WEO and WJP to vote or to direct the
vote and to dispose or to direct the disposition of 15,528,414 Shares held by
SPO and SFP in the aggregate. In addition, JHS has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 18,700 Shares
held in the John H. Scully Individual Retirement Accounts, which are
self-directed individual retirement accounts, and 284,600 Shares held by the PS
Foundation, for which JHS is the controlling person, sole director and executive
officer.

WEO

As one of three controlling persons of SPO Advisory Corp., which is the
sole general partner of each of SPO Advisory Partners and SF Advisory Partners,
WEO may be deemed to have shared power with JHS and WJP to vote or to direct the
vote and to dispose or to direct the disposition of 15,528,414 Shares held by
SPO and SFP in the aggregate. In addition, WEO has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 26,700 shares
held in the William E. Oberndorf Individual Retirement Account, which is a self-
directed individual retirement account.

WJP

As one of the controlling persons of SPO Advisory Corp., which is the
sole general partner of each of SPO Advisory Partners and SF Advisory Partners,
WJP may be deemed to have shared power with JHS and WEO to vote or to direct the
vote and to dispose or to direct the disposition of 15,528,414 Shares held by
SPO and SFP in the aggregate. WJP may be deemed to have shared power to vote or
to direct the vote and to dispose or to direct the disposition of 50,800 Shares
held by the Patterson Foundation. In addition, WJP has the sole power to vote or
to direct the vote and to dispose or to direct the disposition of 1,700 Shares
held in the William J. Patterson Individual Retirement Account, which is a
self-directed individual retirement account.

PS FOUNDATION

Acting through its controlling person, PS Foundation has the sole power
to vote or to direct the vote and to dispose or to direct the disposition of
284,600 Shares.

PATTERSON FOUNDATION

Acting through its two controlling persons, directors and executive
officers, Patterson Foundation has the sole power to vote or to direct the vote
and to dispose or to direct the disposition of 50,800 Shares.

EJW

EJW has the sole power to vote or to direct the vote and to dispose or
to direct the disposition of 126 Shares.

IRM

IRM has the sole power to vote or to direct the vote and to dispose or
to direct the disposition of 256 Shares held in the Ian R. McGuire Individual
Retirement Account, which is a self-directed individual retirement account. In
addition, IRM has the sole power to vote or to direct the vote and to dispose
or to direct the disposition of 900 Shares.

(c) Since the most recent filing on Schedule 13D, Reporting Persons
purchased Shares in open market transactions on the Nasdaq Global Select Market
as set forth on Schedule I attached hereto.

Page 17 of 28 pages

Except as set forth in this paragraph (c), to the best of the knowledge
of each of the Reporting Persons, none of the persons named in response to
paragraph (a) has effected any transactions in Shares since the most recent
filing on Schedule 13D.

(d) Each of the Reporting Persons affirms that no person other than
such Reporting Person has the right to receive or the power to direct the
receipt of distributions with respect to, or the proceeds from the sale of,
Shares owned by such Reporting Person.

(e) Not applicable.

ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.

Item 7 is hereby amended and restated in its entirety as follows:

Exhibit A: Agreement pursuant to Rule 13d-1 (k)

Exhibit B: Powers of Attorney (previously filed)

Page 18 of 28 pages

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Dated July 1, 2008 By: /s/ Kim M. Silva
--------------------------------
Kim M. Silva

Attorney-in-Fact for:

SPO PARTNERS II, L.P.(1)
SPO ADVISORY PARTNERS, L.P.(1)
SAN FRANCISCO PARTNERS II, L.P.(1)
SF ADVISORY PARTNERS, L.P.(1)
SPO ADVISORY CORP.(1)
JOHN H. SCULLY(1)
WILLIAM E. OBERNDORF(1)
WILLIAM J. PATTERSON(1)
PHOEBE SNOW FOUNDATION, INC.(1)
THE ELIZABETH R. & WILLIAM J.
PATTERSON FOUNDATION(1)
ELI J. WEINBERG(1)
IAN R. McGUIRE(1)

(1) A Power of Attorney
authorizing Kim M. Silva to
act on behalf of this
person or entity has been
previously filed with the
Securities and Exchange
Commission.

Page 19 of 28 pages
SCHEDULE I TO SCHEDULE 13D

Reporting Person Date of Type Number of Price Per Where/How
Transaction Shares Share ($) Transaction Effected
--------------------------------------------------------------------------------------------------------------------------------

SPO Partners II, L.P. 06/26/08 Buy 2610 34.0200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 2983 34.0300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 186 34.0400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 280 34.0600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 93 34.0700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 280 34.1400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1865 34.1500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 93 34.1700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 373 34.1800 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 93 34.1900 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 280 34.2100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 280 34.2200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 186 34.2300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 466 34.2500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 93 34.2600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 186 34.2700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 466 34.2900 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 93 34.3000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1492 34.3300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 6153 34.3400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 6806 34.3500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 2983 34.3600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3449 34.3700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1585 34.3800 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 2144 34.3900 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 6169 34.4000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 5391 34.4100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1585 34.4200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3356 34.4300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 8206 34.4400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 9789 34.4500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 10442 34.4600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 10538 34.4700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 4752 34.4800 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3729 34.4900 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 7085 34.5000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1026 34.5100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1245 34.5200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 2128 34.5300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1492 34.5400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1447 34.5500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 865 34.5600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 839 34.5700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1026 34.5800 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 466 34.5900 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1492 34.6000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1585 34.6100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 2424 34.6200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1585 34.6300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1119 34.6400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1398 34.6500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 5594 34.6600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 4289 34.6700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1492 34.6800 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1678 34.6900 Open Market/Broker

Page 20 of 28 pages
SCHEDULE I TO SCHEDULE 13D

SPO Partners II, L.P. 06/26/08 Buy 1398 34.7000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3263 34.7100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1771 34.7200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1398 34.7300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 2704 34.7400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 8857 34.7500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 9509 35.0000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1492 35.0100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 11281 35.0200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 280 35.0300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 559 35.0400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 26477 35.0500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 5034 35.0600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1026 35.0700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 280 35.0800 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 1865 35.0900 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 19205 35.1000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 746 35.1100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 6453 35.1200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 12641 35.1300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 7065 35.1400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 13255 35.1500 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 10928 35.1600 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 10721 35.1700 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3263 35.1800 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3543 35.1900 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 14172 35.2000 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3449 35.2100 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 839 35.2200 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 14171 35.2300 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 4289 35.2400 Open Market/Broker
SPO Partners II, L.P. 06/26/08 Buy 3916 35.2500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 108 34.0200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 123 34.0300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 8 34.0400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 11 34.0600 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 4 34.0700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 11 34.1400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 77 34.1500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 4 34.1700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 15 34.1800 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 4 34.1900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 11 34.2100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 11 34.2200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 8 34.2300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 19 34.2500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 4 34.2600 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 8 34.2700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 19 34.2900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 4 34.3000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 61 34.3300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 253 34.3400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 280 34.3500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 123 34.3600 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 142 34.3700 Open Market/Broker

Page 21 of 28 pages
SCHEDULE I TO SCHEDULE 13D

San Francisco Partners II, L.P. 06/26/08 Buy 65 34.3800 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 89 34.3900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 253 34.4000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 222 34.4100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 65 34.4200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 138 34.4300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 338 34.4400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 402 34.4500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 429 34.4600 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 433 34.4700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 196 34.4800 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 153 34.4900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 291 34.5000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 42 34.5100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 51 34.5200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 87 34.5300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 61 34.5400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 59 34.5500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 36 34.5600 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 34 34.5700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 42 34.5800 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 19 34.5900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 61 34.6000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 65 34.6100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 100 34.6200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 65 34.6300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 46 34.6400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 57 34.6500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 230 34.6600 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 176 34.6700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 61 34.6800 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 69 34.6900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 57 34.7000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 134 34.7100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 73 34.7200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 57 34.7300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 111 34.7400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 364 34.7500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 391 35.0000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 61 35.0100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 464 35.0200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 11 35.0300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 23 35.0400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 1088 35.0500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 207 35.0600 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 42 35.0700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 11 35.0800 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 77 35.0900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 789 35.1000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 31 35.1100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 265 35.1200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 519 35.1300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 290 35.1400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 545 35.1500 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 449 35.1600 Open Market/Broker

Page 22 of 28 pages
SCHEDULE I TO SCHEDULE 13D

San Francisco Partners II, L.P. 06/26/08 Buy 441 35.1700 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 134 35.1800 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 146 35.1900 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 582 35.2000 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 142 35.2100 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 34 35.2200 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 582 35.2300 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 176 35.2400 Open Market/Broker
San Francisco Partners II, L.P. 06/26/08 Buy 161 35.2500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 49 34.0200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 56 34.0300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 4 34.0400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 5 34.0600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 2 34.0700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 5 34.1400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 34 34.1500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 2 34.1700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 7 34.1800 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 2 34.1900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 5 34.2100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 5 34.2200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 4 34.2300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 9 34.2500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 2 34.2600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 4 34.2700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 9 34.2900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 2 34.3000 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 28 34.3300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 116 34.3400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 128 34.3500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 56 34.3600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 65 34.3700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 30 34.3800 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 40 34.3900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 116 34.4000 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 101 34.4100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 30 34.4200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 63 34.4300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 154 34.4400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 184 34.4500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 196 34.4600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 198 34.4700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 89 34.4800 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 70 34.4900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 133 34.5000 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 19 34.5100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 23 34.5200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 40 34.5300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 28 34.5400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 27 34.5500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 16 34.5600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 16 34.5700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 19 34.5800 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 9 34.5900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 28 34.6000 Open Market/Broker

Page 23 of 28 pages
SCHEDULE I TO SCHEDULE 13D

Phoebe Snow Foundation, Inc. 06/26/08 Buy 30 34.6100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 46 34.6200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 30 34.6300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 21 34.6400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 26 34.6500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 105 34.6600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 81 34.6700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 28 34.6800 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 32 34.6900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 26 34.7000 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 61 34.7100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 33 34.7200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 26 34.7300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 51 34.7400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 167 34.7500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 179 35.0000 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 28 35.0100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 212 35.0200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 5 35.0300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 11 35.0400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 498 35.0500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 95 35.0600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 19 35.0700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 5 35.0800 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 35 35.0900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 361 35.1000 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 14 35.1100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 121 35.1200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 238 35.1300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 133 35.1400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 249 35.1500 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 206 35.1600 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 202 35.1700 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 61 35.1800 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 67 35.1900 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 267 35.2000 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 65 35.2100 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 16 35.2200 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 267 35.2300 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 81 35.2400 Open Market/Broker
Phoebe Snow Foundation, Inc. 06/26/08 Buy 74 35.2500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 33 34.0200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 38 34.0300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 2 34.0400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 4 34.0600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 1 34.0700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 4 34.1400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 24 34.1500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 1 34.1700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 5 34.1800 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 1 34.1900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 4 34.2100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 4 34.2200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 2 34.2300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 6 34.2500 Open Market/Broker

Page 24 of 28 pages
SCHEDULE I TO SCHEDULE 13D

William E. Oberndorf IRA 06/26/08 Buy 1 34.2600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 2 34.2700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 6 34.2900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 1 34.3000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.3300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 78 34.3400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 86 34.3500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 38 34.3600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 44 34.3700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 20 34.3800 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 27 34.3900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 79 34.4000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 69 34.4100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 20 34.4200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 43 34.4300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 104 34.4400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 125 34.4500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 133 34.4600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 134 34.4700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 60 34.4800 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 48 34.4900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 91 34.5000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 13 34.5100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 16 34.5200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 28 34.5300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.5400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.5500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 11 34.5600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 11 34.5700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 13 34.5800 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 6 34.5900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.6000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 20 34.6100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 30 34.6200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 20 34.6300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 14 34.6400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.6500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 71 34.6600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 54 34.6700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.6800 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 21 34.6900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.7000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 42 34.7100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 23 34.7200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 34.7300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 34 34.7400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 112 34.7500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 121 35.0000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 19 35.0100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 143 35.0200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 4 35.0300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 7 35.0400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 337 35.0500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 64 35.0600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 13 35.0700 Open Market/Broker

Page 25 of 28 pages
SCHEDULE I TO SCHEDULE 13D

William E. Oberndorf IRA 06/26/08 Buy 4 35.0800 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 23 35.0900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 245 35.1000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 9 35.1100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 83 35.1200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 161 35.1300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 90 35.1400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 169 35.1500 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 139 35.1600 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 136 35.1700 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 42 35.1800 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 44 35.1900 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 180 35.2000 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 44 35.2100 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 11 35.2200 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 180 35.2300 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 54 35.2400 Open Market/Broker
William E. Oberndorf IRA 06/26/08 Buy 49 35.2500 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 1580 34.6500 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 395 34.6800 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 5628 34.6900 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 31593 34.7000 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 5924 34.7200 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 99 34.7300 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 197 34.7400 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 56423 34.7500 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 5035 34.7700 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 987 34.7900 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 40312 34.8000 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 1747 34.8100 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 9357 34.8200 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 5331 34.8300 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 20649 34.8400 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 36619 34.8500 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 930 34.8600 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 197 34.8700 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 7091 34.8800 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 1876 34.8900 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 14854 34.9000 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 6615 34.9500 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 197 34.9900 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 32679 35.0000 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 2962 35.0500 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 13822 35.1000 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 13625 35.1500 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 1678 35.1600 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 34637 35.1700 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 3061 35.1800 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 889 35.1900 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 10653 35.2000 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 18390 35.2100 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 4235 35.2400 Open Market/Broker
SPO Partners II, L.P. 06/27/08 Buy 29333 35.2500 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 4 34.6500 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 1 34.6800 Open Market/Broker

Page 26 of 28 pages
SCHEDULE I TO SCHEDULE 13D

John H Scully IRRA 06/27/08 Buy 13 34.6900 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 76 34.7000 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 14 34.7200 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 1 34.7400 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 134 34.7500 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 12 34.7700 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 3 34.7900 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 96 34.8000 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 4 34.8100 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 22 34.8200 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 13 34.8300 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 49 34.8400 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 87 34.8500 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 2 34.8600 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 1 34.8700 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 17 34.8800 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 4 34.8900 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 35 34.9000 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 16 34.9500 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 1 34.9900 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 78 35.0000 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 7 35.0500 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 33 35.1000 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 32 35.1500 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 4 35.1600 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 83 35.1700 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 7 35.1800 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 2 35.1900 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 25 35.2000 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 44 35.2100 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 10 35.2400 Open Market/Broker
John H Scully IRRA 06/27/08 Buy 70 35.2500 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 16 34.6500 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 4 34.6800 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 59 34.6900 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 331 34.7000 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 62 34.7200 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 1 34.7300 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 2 34.7400 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 592 34.7500 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 53 34.7700 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 10 34.7900 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 423 34.8000 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 18 34.8100 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 98 34.8200 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 56 34.8300 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 217 34.8400 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 384 34.8500 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 10 34.8600 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 2 34.8700 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 74 34.8800 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 20 34.8900 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 156 34.9000 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 69 34.9500 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 2 34.9900 Open Market/Broker

Page 27 of 28 pages
SCHEDULE I TO SCHEDULE 13D

William E. Oberndorf IRA 06/27/08 Buy 343 35.0000 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 31 35.0500 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 145 35.1000 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 143 35.1500 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 18 35.1600 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 363 35.1700 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 32 35.1800 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 9 35.1900 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 112 35.2000 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 193 35.2100 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 44 35.2400 Open Market/Broker
William E. Oberndorf IRA 06/27/08 Buy 308 35.2500 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 695 34.7600 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 4235 35.0000 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 99 35.8200 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 592 35.8300 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 592 35.8400 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 3648 35.8500 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 3846 35.8600 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 3057 35.8700 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 2366 35.8800 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 2226 35.8900 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 14800 35.9000 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 2662 35.9100 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 394 35.9200 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 6102 35.9300 Open Market/Broker
SPO Partners II, L.P. 06/30/08 Buy 32386 35.9500 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 2 34.7600 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 11 35.0000 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 1 35.8300 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 2 35.8400 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 9 35.8500 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 10 35.8600 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 8 35.8700 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 6 35.8800 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 6 35.8900 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 38 35.9000 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 7 35.9100 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 1 35.9200 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 16 35.9300 Open Market/Broker
John H Scully IRRA 06/30/08 Buy 83 35.9500 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 8 34.7600 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 49 35.0000 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 1 35.8200 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 7 35.8300 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 6 35.8400 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 43 35.8500 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 44 35.8600 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 35 35.8700 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 28 35.8800 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 26 35.8900 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 172 35.9000 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 31 35.9100 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 5 35.9200 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 70 35.9300 Open Market/Broker
William E. Oberndorf IRA 06/30/08 Buy 375 35.9500 Open Market/Broker

Page 28 of 28 pages

EXHIBIT INDEX

EXHIBIT DOCUMENT DESCRIPTION
------- --------------------
A Agreement Pursuant to Rule 13d-1 (k)

B Powers of Attorney (previously filed)