Exhibit 12.1

Statement Regarding Computation of Ratios

(In thousands)

	Year Ended December 31,
	2005			2006			2007			2008			2009
Earnings:
Consolidated loss before income taxes	$	(67,901	)	$	(86,248	)	$	(143,166	)	$	(237,293	)	$	(153,899	)
Add:  Fixed charges		2,163			2,111			3,959			6,686			19,018
Amortization of capitalized interest		—			—			—			6			43
Less: Capitalized interest		—			—			—			(860	)		—
Earnings as defined	$	(65,738	)	$	(84,137	)	$	(139,207	)	$	(231,461	)	$	(134,838	)
Fixed Charges:
Interest Expense	$	1,613		$	1,612		$	3,520		$	6,313		$	18,718
Estimated interest component of rent expense		550			499			439			373			300
Total fixed charges	$	2,163		$	2,111		$	3,959		$	6,686		$	19,018
Ratio of earnings to fixed charges (1)		—			—			—			—			—
Deficiency of earnings available to cover fixed charges	$	(67,901	)	$	(86,248	)	$	(143,166	)	$	(238,147	)	$	(153,856	)
Combined fixed charges and preferred stock dividends:
Fixed charges	$	2,163		$	2,111		$	3,959		$	6,686		$	19,018
Preferred stock dividend requirements of the registrant		9,185			2,031			2,114			1,912			—
Total combined fixed charges and preferred stock dividends	$	11,348		$	4,142		$	6,073		$	8,598		$	19,018
Ratio of earnings to combined fixed charges and preferred stock dividends (1)		—			—			—			—			—
Deficiency of earnings available to cover combined fixed charges
and preferred stock dividends	$	(77,086	)	$	(88,279	)	$	(145,280	)	$	(240,059	)	$	(153,856	)

(1) Earnings were insufficient to cover total fixed charges and total combined fixed charges and preferred stock dividends.