UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Item 3.

Source and Amount of Funds or Other Consideration

Item 3 of the Amended 13D is hereby amended and restated in its entirety as follows:

The total amount of funds used by the WP VIII Funds to purchase the securities of the Company as described herein was furnished from the working capital of such Fund.  The total amount of funds paid by the WP VIII Funds to purchase the securities of the Company as described herein is $270,524,907.54.  The total amount of funds paid by the WP X Funds to purchase the securities of the Company as described herein was furnished from the working capital of such Fund.  The total amount of funds paid by the WP X Funds to purchase the securities of the Company issued pursuant to the 2009 Purchase Agreement (as defined below) is $175,241,398.94.

Item 4.

Purpose of Transaction

Item 4 of the Amended 13D is hereby amended by adding the following to the end thereof:

On January 29, 2009, the WP X Funds closed on the transactions contemplated by the 2009 Purchase Agreement (as previously reported in Amendment No. 6) and acquired from the Company (a) an aggregate of 17,395,626 shares of Common Stock at a price per share equal to $10.06, and for an aggregate purchase price of $174,999,997.56; and (b) warrants to purchase an aggregate of 3,862,422 shares of Common Stock with a per share exercise price of $11.57, and for an aggregate purchase price of $241,401.38. The 2009 Warrants entered into between the Company and each of the WP X Funds are attached hereto as Exhibits 99.1 and 99.2.

In connection with the closing of the transactions contemplated by the 2009 Purchase Agreement, the Company and each of the Funds amended and restated that certain Second Amended and Restated Stockholders Agreement, dated as of May 20, 2008, by entering into that certain Third Amended and Restated Stockholders Agreement, dated as of January 29, 2009, a copy of which is attached hereto as Exhibit 99.3.

Item 5.

Interest in Securities of the Issuer

Items 5(a), (b) and (c) of the Amended 13D are hereby amended and restated in their entirety as follows:

(a)           Due to their respective relationships with the Funds and each other, as of January 30, 2009, each of the Reporting Persons may be deemed to beneficially own, in the aggregate, 54,804,276 shares of Common Stock.  As of January 30, 2009, the Reporting Persons may also be deemed to beneficially own additional shares of Common

Stock by virtue of certain of the following securities which the Funds’ may be deemed to beneficially own: the Series B Preferred Stock; the Adjustable Warrant; the March 15 Warrants; the Securities Purchase Warrants; the Stock Purchase Warrants; the 2008 Warrants; and the 2009 Warrants (collectively, the “Convertible Securities”).  Assuming the full exercise and conversion of the Convertible Securities, the Reporting Persons may be deemed to beneficially own 72,995,474 shares of Common Stock, representing approximately 26.4% of the outstanding class of Common Stock, based on a total of 276,101,737 shares of Common Stock outstanding, which is comprised of:  (i) 240,514,913 shares of Common Stock outstanding as of October 31, 2008, as represented in the Company’s Form 10-K for the fiscal year ended September 30, 2008 (the “Form 10-K”); (ii) the 3,562,238 shares of Common Stock issuable upon the conversion of the 3,562,238 shares of Series B Preferred Stock acquired by certain of the Funds; (iii) the 525,732 shares of Common Stock presently issuable upon the exercise of the Adjustable Warrant, as represented by the Company in the Form 10-K; (iv) the 2,500,000 shares of Common Stock issuable upon the exercise of the March 15 Warrants; (v) the 863,236 shares of Common Stock presently issuable upon the exercise of the Securities Purchase Warrants; (vi) the 3,177,570 shares of Common Stock presently issuable upon the exercise of the Stock Purchase Warrants; (vii) the 3,700,000 shares of Common Stock presently issuable upon the exercise of the 2008 Warrants; (viii) the 3,862,422 shares of Common Stock acquirable upon the exercise of the 2009 Warrants; and (ix) the 17,395,626 shares of Common Stock issued to the WP X Funds pursuant to the 2009 Purchase Agreement.

(b)           Each of WP X LP, WP X LLC, WPP LLC, WP LLC and WP may be deemed to share with the WP X Funds the power to vote or to direct the vote and to dispose or to direct the disposition of the 21,258,048 shares of Common Stock the WP X Funds may be deemed to beneficially own as of January 30, 2009.  Each of WPP LLC, WP LLC and WP may be deemed to share with WP VIII the power to vote or to direct the vote and to dispose or to direct the disposition of the 51,737,426 shares of Common Stock WP VIII may be deemed to beneficially own as of January 30, 2009.  Charles R. Kaye and Joseph P. Landy are Managing General Partners of WP and Managing Members and Co-Presidents of WP LLC and may be deemed to control the other Reporting Persons.  Messrs. Kaye and Landy disclaim beneficial ownership of all shares held by the Funds.  Neither the filing of this Schedule 13D nor any of its contents shall be deemed to constitute an admission that any Reporting Person or any of its affiliates is the beneficial owner of any shares of Common Stock for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose.

(c)           On January 30, 2009, Patrick Hackett, a General Partner of WP and a Managing Director and Member of WP LLC, became a member of the Board of Directors of the Company. As a result of joining the Board as a non-employee director, Mr. Hackett received a grant of 30,000 restricted stock units with a per share purchase price of $0.001. Except as described in this Amendment No. 7 and as previously reported on Amendment No. 6, during the last sixty (60) days there were no transactions in the Common Stock effected by the Reporting Persons, nor, to the best of their knowledge, any of their directors, executive officers, general partners or members.

Item 6.

Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

Item 6 of the Amended 13D is hereby amended by adding the following at the end of the discussion:

As described in Item 4 hereto, on January 29, 2009, the Funds and the Company entered into the Third Amended and Restated Stockholders Agreement and the Company

issued the 2009 Warrants to the WP X Funds in connection with the closing of the transactions contemplated by the 2009 Purchase Agreement. The information set forth in Item 4 with respect to the Third Amended and Restated Stockholders Agreement and the 2009 Warrants is incorporated into this Item 6 by reference.

Item 7.

Material to be Filed as Exhibits

Exhibit 99.1.

Warrant, dated January 29, 2009, between the Company and WP X

Exhibit 99.2.

Warrant, dated January 29, 2009, between the Company and WPP X

Exhibit 99.3.

Third Amended and Restated Stockholders Agreement, dated as of January 29, 2009, by and among the Company and the Funds.

Dated: January 30, 2009

WARBURG PINCUS PRIVATE EQUITY VIII,
L.P.

By:

Warburg Pincus Partners, LLC,

its General Partner

By:

Warburg Pincus & Co.,

its Managing Member

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Partner

Dated: January 30, 2009

WARBURG PINCUS PRIVATE EQUITY X, L.P.

By:

Warburg Pincus X L.P.,

its General Partner

By:

Warburg Pincus X LLC,

its General Partner

By:

Warburg Pincus Partners, LLC,

its Sole Member

By:

Warburg Pincus & Co.,

its Managing Member

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Partner

Dated: January 30, 2009

WARBURG PINCUS X PARTNERS, L.P.

By:

Warburg Pincus X L.P.,

its General Partner

By:

Warburg Pincus X LLC,

its General Partner

By:

Warburg Pincus Partners, LLC,

its Sole Member

By:

Warburg Pincus & Co.,

its Managing Member

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Partner

Dated: January 30, 2009

WARBURG PINCUS X, LLC

By:

Warburg Pincus Partners, LLC,

its Sole Member

By:

Warburg Pincus & Co.,

its Managing Member

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Partner

Dated: January 30, 2009

WARBURG PINCUS X, L.P.

By:

Warburg Pincus X LLC,

its General Partner

By:

Warburg Pincus Partners, LLC,

its Sole Member

By:

Warburg Pincus & Co.,

its Managing Member

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Member

Dated: January 30, 2009

WARBURG PINCUS PARTNERS, LLC

By:

Warburg Pincus & Co.,

its Managing Member

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Partner

Dated: January 30, 2009

WARBURG PINCUS LLC

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Managing Director

Dated: January 30, 2009

WARBURG PINCUS & CO.

By:

           /s/ Scott A. Arenare

Name: Scott A. Arenare

Title: Partner

Dated: January 30, 2009

By:

           /s/ Scott A. Arenare

Name: Charles R. Kaye

By: Scott A. Arenare, Attorney-in-Fact*

Dated: January 30, 2009

By:

           /s/ Scott A. Arenare

Name: Joseph P. Landy

By: Scott A. Arenare, Attorney-in-Fact**

ATTENTION

Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).