gxdx13da_amendment1.htm

1.	NAMES OF REPORTING PERSONS......MMI Investments, L.P.
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP	(a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS	WC
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)	o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION	Delaware
NUMBER OF SHARES	7. SOLE VOTING POWER	286,000
BENEFICIALLY OWNED BY	8. SHARED VOTING POWER	- 0 -
EACH REPORTING	9. SOLE DISPOSITIVE POWER	286,000
PERSON WITH	10. SHARED DISPOSITIVE POWER	- 0 -
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON	286,000
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES	o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)	1.6%
14.	TYPE OF REPORTING PERSON	PN

1.	NAMES OF REPORTING PERSONS....MCM Capital Management, LLC
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP	(a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS	AF
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)	o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION	Delaware
NUMBER OF SHARES	7. SOLE VOTING POWER	286,000
BENEFICIALLY OWNED BY	8. SHARED VOTING POWER	- 0 -
EACH REPORTING	9. SOLE DISPOSITIVE POWER	286,000
PERSON WITH	10. SHARED DISPOSITIVE POWER	- 0 -
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON	286,000
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES	o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)	1.6%
14.	TYPE OF REPORTING PERSON	OO

1.	NAMES OF REPORTING PERSONS......Clay B. Lifflander
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP	(a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)	o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION	USA
NUMBER OF SHARES	7. SOLE VOTING POWER	- 0 -*
BENEFICIALLY OWNED BY	8. SHARED VOTING POWER	- 0 -
EACH REPORTING	9. SOLE DISPOSITIVE POWER	- 0 -*
PERSON WITH	10. SHARED DISPOSITIVE POWER	- 0 -
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON	- 0 -*
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES	o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)	0%*
14.	TYPE OF REPORTING PERSON	IN
	* See Item 5.

Item 3.

Source and Amount of Funds or Other Consideration

Item 3 is hereby amended and restated to read as follows:

The aggregate purchase price of the 286,000 Shares owned by MMI Investments is $8,237,028; the source of funds is MMI Investments' working capital.

(a)-(b) The aggregate percentage of Shares reported owned by each Reporting Person is based upon 17,517,296 Shares outstanding as of April 30, 2010, which is the total number of Shares outstanding as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 6, 2010.

As of the close of business on June 18, 2010, MMI Investments directly owned 286,000 Shares, constituting approximately 1.6% of the Shares outstanding. MMI Investments has the sole power to direct the vote and disposition of such Shares on the date of this Statement. MCM does not directly own any Shares. However, by virtue of being the general partner of MMI Investments, MCM may be deemed to be the beneficial owner of the Shares owned by MMI Investments and to have sole power over the voting and disposition of such Shares as a result of its having the sole power to make voting and disposition decisions on behalf of MMI Investments with respect to such Shares. Mr. Lifflander does not directly own any Shares. However, as a member of a "group" for the purposes of Rule 13d-5(b)(1) of the Securities Exchange Act of 1934, as amended, Mr. Lifflander may be deemed to beneficially own the Shares owned by MMI Investments. Mr. Lifflander disclaims beneficial ownership of such Shares, except to the extent of his pecuniary interest therein.

Except as described above, as of the date hereof, to each Reporting Person's knowledge, none of the persons listed on Schedule I owns any Shares or has any right to acquire, directly or indirectly, any beneficial ownership of Shares.

(c) Except for the open market purchases of Shares by MMI Investments set forth in Schedule II attached hereto and incorporated herein by reference, there have been no transactions with respect to the Shares during the past 60 days by MMI Investments, MCM or Mr. Lifflander, or, to each Reporting Person's knowledge, any of the persons listed on Schedule I.

(d) No person other than the Reporting Persons is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, such Shares.

(e) As of June 17, 2010, the Reporting Persons ceased to be beneficial owners of more than 5% of the securities of the Issuer.

Shares of Common Stock Purchased / (Sold)	Price Per Share($)	Date of Purchase / Sale
MMI Investments, L.P.
80,000	25.96	5/24/2010
30,000	25.41	5/25/2010
(575,000)	16.77	6/17/2010
(275,000)	16.77	6/18/2010

	MMI INVESTMENTS, L.P.

	By:	MCM Capital Management, LLC General Partner

	By:	/s/ JEROME J. LANDE
		Jerome J. Lande
		Executive Vice President

	MCM CAPITAL MANAGEMENT, LLC

	By:	/s/ JEROME J. LANDE
		Jerome J. Lande
		Executive Vice President

	/s/ CLAY B. LIFFLANDER
	Clay B. Lifflander