---

 

CUSIP NO. 451272306	13G	Page 9 of 11 Pages

 

Item 4

Ownership:

 

CITADEL LIMITED PARTNERSHIP

CITADEL INVESTMENT GROUP, L.L.C.

CITADEL DERIVATIVES GROUP LLC

KENNETH GRIFFIN

CITADEL EQUITY FUND LTD.

(a)

Amount beneficially owned:

 

5,577,873 shares as of the close of business on July 12, 2007; 5,820,944 shares as of the close of business on August 30, 2007; and 5,820,944 shares as of the date of this filing.

 

(b)

Percent of Class:

 

Approximately 10.01% as of the close of business on July 12, 2007; approximately 10.24% as of the close of business on August 30, 2007; and approximately 10.14% as of the date of this filing.⁷

 

(c)

Number of shares as to which such person has:

 

(i)

Sole power to vote or to direct the vote:

 

0

 

(ii)

shared power to vote or to direct the vote:

 

See Item 4(a) above.

 

---

⁷  Based on 55,087,325 outstanding shares of the common stock of Issuer on July 12, 2007, 56,198,024 outstanding shares of the common stock of Issuer on August 30, 2007, and 56,774,024 outstanding shares of the common stock of Issuer on October 7, 2007, each as reported by the Issuer’s office of investor relations to the Reporting Persons on October 8, 2007.

 

The Reporting Persons became the beneficial owner of more than 10% of the Issuer’s outstanding shares of common stock on July 12, 2007. The Reporting Persons ceased to be the beneficial owner of more than 10% of the Issuer’s outstanding shares of common stock on July 17, 2007. The Reporting Persons again became the beneficial owner of more than 10% of the Issuer’s outstanding shares on August 30, 2007. Due to a calculation error involving the amount of the Issuer’s common stock then outstanding, the computations performed on behalf of the Reporting Persons did not reflect, as of July 12, 2007, or as of August 30, 2007, that they had acquired beneficial ownership of more than 10% of the outstanding shares of common stock of the Issuer. As a result, the Reporting Persons did not file this Schedule 13G Amendment until now.

 

As a result of the above-described calculation error, CDG continued to make markets in the common stock of the Issuer while the Reporting Persons beneficially owned more than 10% of the Issuer’s outstanding shares of common stock. From July 12 through July 16, 2007 and from August 30, 2007 through date of this filing, all of the Reporting Persons’ sales of the common stock of the Issuer were sales made by CDG in the ordinary course of its broker-dealer market making business (with the exception of two sale transactions totaling 400 shares made on July 12 and July 16, 2007). The Reporting Persons are in the process of preparing and filing the appropriate forms under Section 16 of the Securities Exchange Act of 1934, as amended.

 

---

 

CUSIP NO. 451272306	13G	Page 10 of 11 Pages

 

(iii)

sole power to dispose or to direct the disposition of:

0

 

(iv)

shared power to dispose or to direct the disposition of:

 

See Item 4(a) above.

 

Item 5

Ownership of Five Percent or Less of a Class:

Not Applicable.

Item 6

Ownership of More than Five Percent on Behalf of Another Person:

Not Applicable.

Item 7

Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company:

See Item 2 above.

Item 8

Identification and Classification of Members of the Group:

Not Applicable.

Item 9

Notice of Dissolution of Group:

Not Applicable.

 

---

 

CUSIP NO. 451272306	13G	Page 11 of 11 Pages

 

Item 10

Certification:

By signing below I certify that, to the best of my 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.

 

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

 

Dated this 9^th day of October, 2007

CITADEL LIMITED PARTNERSHIP   By: Citadel Investment Group, L.L.C.,        its General Partner   By:  /s/ John C. Nagel John C. Nagel, Director and Associate General Counsel		CITADEL EQUITY FUND LTD.   By: Citadel Limited Partnership,        its Portfolio Manager   By: Citadel Investment Group, L.L.C.,        its General Partner   By:  /s/ John C. Nagel John C. Nagel, Director and Associate General Counsel
CITADEL INVESTMENT GROUP, L.L.C.   By:  /s/ John C. Nagel John C. Nagel, Director and Associate General Counsel		KENNETH GRIFFIN   By:  /s/ John C. Nagel John C. Nagel, attorney-in-fact8
CITADEL DERIVATIVES GROUP LLC     By:  Citadel Limited Partnership,         its Managing Member     By:  Citadel Investment Group, L.L.C.,         its General Partner     By:  /s/ John S. Nagel John S. Nagel, Director and Associate General Counsel

---

⁸ John C. Nagel is signing on behalf of Kenneth Griffin as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission on February 24, 2006, and hereby incorporated by reference herein. The power of attorney was filed as an attachment to a filing by Citadel Limited Partnership on Schedule 13G for Morgans Hotel Group Co.

 

---