Exhibit 12.1

Computation of Ratio of Earnings to Combined Fixed Charges and Preference Dividends

(In thousands,
except ratios)



|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|-------------------------------------------------------------------- |  | ------------------------ | -------- | ----------------------- | ---- | - | ------- |  | ---- | ------- | ---- | - | ------- | ---- | - | ------- | --- |  | - | ------ |  | - | -----
|                                                                     |  | Six Months EndedJune 30, |          | Years EndedDecember 31,
|                                                                     |  | 2008                     |          |                         | 2007 |   | 2007    |  | 2006 |         | 2005 |   |         | 2004 |   | 2003   
|                                                                     |  | (In thousands)          
|Earnings                                                             |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Pre-tax (loss) income                                                |  | $                        | (239,205 | )                       |      | $ | 41,600  |  | $    | 86,035  |      | $ | 189,098 |      | $ | (25,697 | )   |  | $ | 9,246  |  | $ | 990  
|Fixed charges                                                        |  |                          | 66,399   |                         |      |   | 62,768  |  |      | 133,474 |      |   | 89,086  |      |   | 25,795  |     |  |   | 3,269  |  |   | 528  
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Total earnings                                                       |  | $                        | (172,806 | )                       |      | $ | 104,368 |  | $    | 219,509 |      | $ | 278,184 |      | $ | 98      |     |  | $ | 12,515 |  | $ | 1,518
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Fixed charges                                                        |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Interest expense and amortization of finance costs                   |  | $                        | 65,768   |                         |      | $ | 62,187  |  | $    | 132,264 |      | $ | 88,414  |      | $ | 25,551  |     |  | $ | 3,178  |  | $ | 476  
|Rental expense representative of interest factor                     |  |                          | 631      |                         |      |   | 581     |  |      | 1,210   |      |   | 672     |      |   | 244     |     |  |   | 91     |  |   | 52   
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Total fixed charges                                                  |  | $                        | 66,399   |                         |      | $ | 62,768  |  | $    | 133,474 |      | $ | 89,086  |      | $ | 25,795  |     |  | $ | 3,269  |  | $ | 528  
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Ratio of earnings to fixed charges                                   |  |                          |         | (1)                     |      |   | 1.7     |  |      | 1.6     |      |   | 3.1     |      |   |        | (2) |  |   | 3.8    |  |   | 2.9  
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Total fixed charges                                                  |  | $                        | 66,399   |                         |      | $ | 62,768  |  | $    | 133,474 |      | $ | 89,086  |      | $ | 25,795  |     |  | $ | 3,269  |  | $ | 528  
|Pre-tax preferred dividend requirements                              |  |                          |         |                         |      |   |        |  |      |        |      |   | 352     |      |   | 680     |     |  |   | 507    |  |   | 456  
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Total fixed charges plus preference dividends                        |  | $                        | 66,399   |                         |      | $ | 62,768  |  | $    | 133,474 |      | $ | 89,438  |      | $ | 26,475  |     |  | $ | 3,776  |  | $ | 984  
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      
|Ratio of earnings to combined fixed charges and preference dividends |  |                          |         | (1)                     |      |   | 1.7     |  |      | 1.6     |      |   | 3.1     |      |   |        | (3) |  |   | 3.3    |  |   | 1.5  
|                                                                     |  |                          |          |                         |      |   |         |  |      |         |      |   |         |      |   |         |     |  |   |        |  |   |      



|(1) | Due to the Companys loss for the six months ended June 30, 2008, the ratio coverage was less than 1:1. The Company would have had to generate additional earnings of
$239.2 million to achieve a coverage ratio of 1:1.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Due to the Companys loss for the year ended December 31, 2005, the ratio coverage was less than 1:1. The Company would have had to generate additional earnings of $25.7
million to achieve a coverage ratio of 1:1.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Due to the Companys loss for the year ended December 31, 2005, the ratio coverage was less than 1:1. The Company would have had to generate additional earnings of $26.4
million to achieve a coverage ratio of 1:1.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------