UNITED STATES
                         SECURITIES EXCHANGE COMMISSION
                             Washington, D.C. 20549

------------------------------------------------------------------------------


                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                                (Amendment No. 2)

                              NALCO HOLDING COMPANY
                              ---------------------
                                (Name of Issuer)

                     Common Stock, par value $0.01 per share
                     ---------------------------------------
                         (Title of Class of Securities)

                                    62985Q101
                                    ---------
                                 (CUSIP Number)

                                  April 3, 2007
                                -----------------
             (Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

                                [ ] Rule 13d-1(b)

                                [X] Rule 13d-1(c)

                                [ ] Rule 13d-1(d)

* 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 the disclosures provided in a prior cover page.

The  information  required  in 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).

                         Continued on following pages
                              Page 1 of 9 Pages




                                 SCHEDULE 13G

CUSIP No.:   62985Q101                                       Page 2 of 9 Pages
...............................................................................
1.    Names of Reporting Persons.

      I.R.S. Identification Nos. of above persons (entities only).


      GLENVIEW CAPITAL MANAGEMENT, LLC
...............................................................................
2.    Check the Appropriate Box if a Member of a Group

      (a)  [ ]

      (b)  [ ]
...............................................................................
3.    SEC Use Only
...............................................................................
4.    Citizenship or Place of Organization

      Delaware
...............................................................................
Number of       5.    Sole Voting Power           None
Shares        ................................................................
Beneficially    6.    Shared Voting Power         16,029,030
Owned by Each ................................................................
Reporting       7.    Sole Dispositive Power      None
Person With   ................................................................
                8.    Shared Dispositive Power    16,029,030
...............................................................................
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      16,029,030
...............................................................................
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

      [  ]
...............................................................................
11.   Percent of Class Represented by Amount in Row (9)

      11.10%  based on 144,355,802 shares outstanding as of March 19, 2007.
...............................................................................
12.   Type of Reporting Person:

      OO




                                 SCHEDULE 13G

CUSIP No.:   62985Q101                                       Page 3 of 9 Pages
...............................................................................
1.    Names of Reporting Persons.

      I.R.S. Identification Nos. of above persons (entities only).


      GLENVIEW CAPITAL GP, LLC
...............................................................................
2.    Check the Appropriate Box if a Member of a Group

      (a)  [ ]

      (b)  [ ]
...............................................................................
3.    SEC Use Only
...............................................................................
4.    Citizenship or Place of Organization

      Delaware
...............................................................................
Number of       5.    Sole Voting Power           None
Shares        ................................................................
Beneficially    6.    Shared Voting Power         14,393,330
Owned by Each ................................................................
Reporting       7.    Sole Dispositive Power      None
Person With   ................................................................
                8.    Shared Dispositive Power    14,393,330
...............................................................................
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      14,393,330
...............................................................................
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

      [x]
...............................................................................
11.   Percent of Class Represented by Amount in Row (9)

      9.97% based on 144,355,802 shares outstanding as of March 19, 2007.
...............................................................................
12.   Type of Reporting Person:

      OO



                                 SCHEDULE 13G

CUSIP No.:   62985Q101                                       Page 4 of 9 Pages
...............................................................................
1.    Names of Reporting Persons.

      I.R.S. Identification Nos. of above persons (entities only).


      GLENVIEW CAPITAL MASTER FUND, LTD.
...............................................................................
2.    Check the Appropriate Box if a Member of a Group

      (a)  [ ]

      (b)  [ ]
...............................................................................
3.    SEC Use Only
...............................................................................
4.    Citizenship or Place of Organization

      Cayman Islands, British West Indies
...............................................................................
Number of       5.    Sole Voting Power           None
Shares        ................................................................
Beneficially    6.    Shared Voting Power         8,793,430
Owned by Each ................................................................
Reporting       7.    Sole Dispositive Power      None
Person With   ................................................................
                8.    Shared Dispositive Power    8,793,430
...............................................................................
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      8,793,430
...............................................................................
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

      |X|
...............................................................................
11.   Percent of Class Represented by Amount in Row (9)

      6.09% based on 144,355,802 shares outstanding as of March 19, 2007.
...............................................................................
12.   Type of Reporting Person:

      OO



                                 SCHEDULE 13G

CUSIP No.:   62985Q101                                       Page 5 of 9 Pages
...............................................................................
1.    Names of Reporting Persons.

      I.R.S. Identification Nos. of above persons (entities only).


      LAWRENCE M. ROBBINS
...............................................................................
2.    Check the Appropriate Box if a Member of a Group

      (a)  [ ]

      (b)  [ ]
...............................................................................
3.    SEC Use Only
...............................................................................
4.    Citizenship or Place of Organization

      United States of America
...............................................................................
Number of       5.    Sole Voting Power           None
Shares        ................................................................
Beneficially    6.    Shared Voting Power         16,029,030
Owned by Each ................................................................
Reporting       7.    Sole Dispositive Power      None
Person With   ................................................................
                8.    Shared Dispositive Power    16,029,030
...............................................................................
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      16,029,030
...............................................................................
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

      [  ]
...............................................................................
11.   Percent of Class Represented by Amount in Row (9)

      11.10%  based on 144,355,802 shares outstanding as of March 19, 2007.
...............................................................................
12.   Type of Reporting Person:

      IA



                                                             Page 6 of 9 Pages

Item 1(a).  Name of Issuer:

            Nalco Holding Company (the "Issuer")

Item 1(b).  Address of Issuer's Principal Executive Offices:

            1601 West Diehl Road, Naperville, Illinois 60563-1198.

Item 2(a).  Name of Person Filing:

            This Statement is filed on behalf of each of the following persons
(collectively, the "Reporting Persons"):

            i)    Glenview Capital Management, LLC ("Glenview Capital
                  Management");

            ii)   Glenview Capital GP, LLC ("Glenview Capital GP");

            iii)  Glenview Capital Master Fund, Ltd. ("Glenview Capital Master
                  Fund"); and

            iv)   Lawrence M. Robbins ("Mr. Robbins").

            This  Statement  relates to Shares (as defined  herein) held for the
accounts of Glenview  Capital  Partners,  L.P., a Delaware  limited  partnership
("Glenview Capital Partners"), Glenview Institutional Partners, L.P., a Delaware
limited partnership ("Glenview Institutional Partners"), Glenview Capital Master
Fund, a Cayman Islands exempted  company,  Glenview  Offshore  Opportunity Fund,
Ltd., a Cayman Islands exempted Company ("Glenview Offshore  Opportunity fund"),
Glenview  Capital   Oppotunity  Fund,  L.P.,  a  Delaware  limited   partnership
("Glenview  Capital  Opportunity  Fund"),  GCM Little Arbor Master Fund, Ltd., a
Cayman Islands  exempted  company ("GCM Little Arbor Master  Fund"),  GCM Little
Arbor Institutional Partners,  L.P., a Delaware limited partnership ("GCM Little
Arbor  Institutional  Partners"),  GCM Little Arbor  Partners,  L.P., a Delaware
limited  partnership  ("GCM Little Arbor  Partners"),  and GCM Opportunity Fund,
L.P., a Delaware limited partnership ("GCM Opportunity Fund").

            Glenview Capital  Management serves as investment manager to each of
Glenview Capital Partners,  Glenview  Institutional  Partners,  Glenview Capital
Master Fund,  Glenview Offshore  Opportunity Fund,  Glenview Capital Opportunity
Fund, GCM Little Arbor Master Fund, GCM Little Arbor Institutional Partners, GCM
Little Arbor  Partners,  and GCM  Opportunity  Fund. In such capacity,  Glenview
Capital  Management may be deemed to have voting and dispositive  power over the
Shares  held for the  accounts of each of Glenview  Capital  Partners,  Glenview
Institutional   Partners,   Glenview  Capital  Master  Fund,  Glenview  Offshore
Opportunity  Fund,  Glenview Capital  Opportunity  Fund, GCM Little Arbor Master
Fund, GCM Little Arbor Institutional  Partners,  GCM Little Arbor Partners,  and
GCM  Opportunity  Fund.  Glenview  Capital GP is the general partner of Glenview
Capital   Partners,   Glenview   Institutional   Partners,   GCM  Little   Arbor
Institutional  Partners and GCM Little Arbor Partners.  Glenview Capital GP also
serves as the  sponsor of the  Glenview  Capital  Master Fund and the GCM Little
Arbor Master Fund. In such capacities, Glenview Capital GP may be deemed to have
voting and  dispositive  power over the Shares held for the  accounts of each of
Glenview Capital Partners,  Glenview  Institutional  Partners,  Glenview Capital
Master  Fund,  GCM Little Arbor  Master  Fund,  GCM Little  Arbor  Institutional
Partners,  and GCM Little Arbor  Partners.  Mr.  Robbins is the Chief  Executive
Officer of Glenview Capital Management and Glenview Capital GP.

Item 2(b). Address of Principal Business Office or, if None, Residence

            The address of the principal  business  office of each of Glenview
Capital Management,  Glenview Capital GP, and Mr. Robbins is 767 Fifth Avenue,
44th Floor,  New York, New York 10153.  The address of the principal  business
office of Glenview Capital Master Fund is Harbour Centre, North Church Street,
P.O. Box 8966T,  George  Town,  Grand  Cayman,  Cayman  Islands,  British West
Indies.



                                                             Page 7 of 9 Pages

Item 2(c).  Citizenship:

            i)    Glenview Capital Management is a Delaware limited liability
                  company;

            ii)   Glenview Capital GP is a Delaware limited liability company;

            iii)  Glenview Capital Master Fund is a Cayman Islands exempted
                  company; and

            iv)   Mr. Robbins is a citizen of the United States of America.

Item 2(d).  Title of Class of Securities:

            Common Stock, par value $0.01 per share (the "Shares")

Item 2(e).  CUSIP Number:

            62985Q101

Item 3.     If This  Statement  is Filed  Pursuant  to  ss.ss.240.13d-1(b)  or
            240.13d-2(b) or (c), Check Whether the Person Filing is a:

            This Item 3 is not applicable.

Item 4.     Ownership:

Item 4(a)   Amount Beneficially Owned:

            (i) As of April 3, 2007, each of Glenview Capital Management and Mr.
Robbins may be deemed to be the  beneficial  owner of  16,029,030  Shares.  This
amount consists of: (A) 720,200 Shares held for the account of Glenview  Capital
Partners;  (B) 8,793,430  Shares held for the account of Glenview Capital Master
Fund; (C) 553,100 Shares held for the account of Glenview  Offshore  Opportunity
Fund; (D) 1,030,400 Shares held for the account of Glenview Capital  Opportunity
Fund;  (E)  3,726,600  Shares  held for the  account of  Glenview  Institutional
Partners;  (F) 962,920  Shares held for the account of GCM Little  Arbor  Master
Fund, (G) 184,260 Shares held for the account of GCM Little Arbor  Institutional
Partners,  (H) 5,920 Shares held for the account of GCM Little  Arbor  Partners,
and (I) 52,200 Shares held for GCM Opportunity Fund.

            (ii) As of April 3,  2007,  Glenview  Capital GP may be deemed to be
the beneficial owner of 14,393,330 Shares.  This amount consists of: (A) 720,200
Shares held for the account of Glenview Capital  Partners;  (B) 8,793,430 Shares
held for the account of Glenview  Capital Master Fund; (C) 3,726,600 Shares held
for the account of Glenview Institutional  Partners; (D) 962,920 Shares held for
the account of GCM Little  Arbor Master  Fund,  (E) 184,260  Shares held for the
account of GCM Little Arbor  Institutional  Partners,  and (F) 5,920 Shares held
for the account of GCM Little Arbor Partners.

            (iii) As of April  3,  2007,  Glenview  Capital  Master  Fund may be
deemed to be the beneficial owner of 8,793,430  Shares.  This amount consists of
8,793,430 Shares held for its account.

Item 4(b)   Percent of Class:

            (i)  The  number  of  Shares  of  which  each  of  Glenview  Capital
Management and Mr. Robbins may be deemed to be the beneficial owner  constitutes
approximately  11.10% of the total  number of  Shares  outstanding  (based  upon
information  provided by the Issuer in its most recently-filed  proxy statement,
there were approximately 144,355,802 shares outstanding as of March 19, 2007).

            (ii) The number of Shares of which Glenview Capital GP may be deemed
to be the beneficial owner constitutes  approximately  9.97% of the total number
of Shares outstanding (based upon information provided by the Issuer in its most
recently-filed  proxy statement,  there were  approximately  144,355,802  shares
outstanding as of March 19, 2007).

            (iii) The number of Shares of which Glenview Capital Master Fund may
be deemed to be the  beneficial  owner  constitutes  approximately  6.09% of the
total  number of Shares  outstanding  (based  upon  information  provided by the
Issuer in its most  recently-filed  proxy  statement,  there were  approximately
144,355,802 shares outstanding as of March 19, 2007).



                                                             Page 8 of 9 Pages

Item 4(c)   Number of Shares of which such person has:

Glenview Capital Management and Mr. Robbins:
-------------------------------------------

(i)   Sole power to vote or direct the vote:                                  0

(ii)  Shared power to vote or direct the vote:                       16,029,030

(iii) Sole power to dispose or direct the disposition of:                     0

(iv)  Shared power to dispose or direct the disposition of:          16,029,030

Glenview Capital GP:
-------------------

(i) Sole power to vote or direct the vote:                                    0

(ii) Shared power to vote or direct the vote:                        14,393,330

(iii) Sole power to dispose or direct the disposition of:                     0

(iv) Shared power to dispose or direct the disposition of:           14,393,330

Glenview Capital Master Fund:
----------------------------

(i)   Sole power to vote or direct the vote:                                  0

(ii)  Shared power to vote or direct the vote:                        8,793,430

(iii) Sole power to dispose or direct the disposition of:                     0

(iv)  Shared power to dispose or direct the disposition of:           8,793,430


Item 5.     Ownership of Five Percent or Less of a Class:

            This Item 5 is not applicable

Item 6.     Ownership of More than Five  Percent on Behalf of Another  Person:

            This Item 6 is not applicable.

Item 7.     Identification and Classification of the Subsidiary Which Acquired
            the Security Being Reported on By the Parent Holding Company:

            See disclosure in Item 2 hereof.

Item 8.     Identification and Classification of Members of the Group:

            This Item 8 is not applicable.

Item 9.     Notice of Dissolution of Group:

            This Item 9 is not applicable.

Item 10.    Certification:

            By signing below each of the Reporting  Persons certifies that, to
the best of their knowledge and belief, the securities  referred to above were
not  acquired  and are not  held for the  purpose  of or with  the  effect  of
changing or  influencing  the control of the issuer of the securities and were
not acquired and are not held in connection  with or as a  participant  in any
transaction having that purpose or effect.



                                                             Page 9 of 9 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.

Date: April 5, 2007                      GLENVIEW CAPITAL MANAGEMENT, LLC


                                         By: /s/ Lawrence M. Robbins
                                             ---------------------------------
                                         Name:  Lawrence M. Robbins
                                         Title: Chief Executive Officer

Date: April 5, 2007                      GLENVIEW CAPITAL GP, LLC


                                         By: /s/ Lawrence M. Robbins
                                             ---------------------------------
                                         Name:  Lawrence M. Robbins
                                         Title: Chief Executive Officer

Date: April 5, 2007                      GLENVIEW CAPITAL MASTER FUND, LTD.

                                         By:  Glenview Capital Management, LLC
                                              As Investment Manager

                                         By: /s/ Lawrence M. Robbins
                                             ---------------------------------
                                         Name:  Lawrence M. Robbins
                                         Title: Chief Executive Officer

Date: April 5, 2007                      LAWRENCE M. ROBBINS


                                         /s/ Lawrence M. Robbins
                                         ----------------------------