Exhibit 12.1

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

(In thousands,
except ratios)





|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|-------------------------------------------------------------------- |  | ---------------------------- | ------- | ------------------------ | ---- | - | ------ |  | ---- | ------- |  | ---- | ------- | ---- |  | ---- | ------ |  | - | ----- |  | - | ------ | -
|                                                                     |  | Three Months Ended March 31, |         | Years Ended December 31, |     
|                                                                     |  | 2007                         |         |                          | 2006 |   | 2006   |  | 2005 |         |  | 2004 |         | 2003 |  | 2002 |       
|Earnings                                                             |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Pre-tax (loss) income                                                |  | $                            | (31,006 | )                        |      | $ | 52,161 |  | $    | 189,098 |  | $    | (25,697 | )    |  | $    | 9,246  |  | $ | 990   |  | $ | (6,882 | )
|Fixed charges                                                        |  |                              | 29,388  |                          |      |   | 9,712  |  |      | 89,086  |  |      | 25,795  |      |  |      | 3,269  |  |   | 528   |  |   | 618    |  
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total earnings                                                       |  | $                            | (1,618  | )                        |      | $ | 61,873 |  | $    | 278,184 |  | $    | 98      |      |  | $    | 12,515 |  | $ | 1,518 |  | $ | (6,264 | )
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Fixed charges                                                        |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Interest expense and amortization of finance costs                   |  | $                            | 29,197  |                          |      | $ | 9,613  |  | $    | 88,414  |  | $    | 25,551  |      |  | $    | 3,178  |  | $ | 476   |  | $ | 558    |  
|Rental expense representative of interest factor                     |  |                              | 191     |                          |      |   | 99     |  |      | 672     |  |      | 244     |      |  |      | 91     |  |   | 52    |  |   | 60     |  
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total fixed charges                                                  |  | $                            | 29,388  |                          |      | $ | 9,712  |  | $    | 89,086  |  | $    | 25,795  |      |  | $    | 3,269  |  | $ | 528   |  | $ | 618    |  
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Ratio of earnings to fixedcharges                                    |  |                              |   (1)  |                          |      |   | 6.4    |  |      | 3.1     |  |      |   (2)  |      |  |      | 3.8    |  |   | 2.9   |  |   |   (4) |  
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total fixed charges                                                  |  | $                            | 29,388  |                          |      | $ | 9,712  |  | $    | 89,086  |  | $    | 25,795  |      |  | $    | 3,269  |  | $ | 528   |  | $ | 618    |  
|Pre-tax preferred dividend requirements                              |  |                              |        |                          |      |   | 108    |  |      | 352     |  |      | 680     |      |  |      | 507    |  |   | 456   |  |   | 447    |  
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total fixed charges plus preference dividends                        |  | $                            | 29,388  |                          |      | $ | 9,820  |  | $    | 89,438  |  | $    | 26,475  |      |  | $    | 3,776  |  | $ | 984   |  | $ | 1,065  |  
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Ratio of earnings to combined fixed charges and preference dividends |  |                              |   (1)  |                          |      |   | 6.3    |  |      | 3.1     |  |      |   (3)  |      |  |      | 3.3    |  |   | 1.5   |  |   |   (5) |  
|                                                                     |  |                              |         |                          |      |   |        |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  



|(1) | Due to the Companys loss for the three months ended March 31, 2007, the ratio coverage was less than 1:1. The Company must generate additional earnings of $31.0
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 must 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 must generate additional earnings of $26.4 million to
achieve a coverage ratio of 1:1.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(4) | Due to the Companys loss for the year ended December 31, 2002, the ratio coverage was less than 1:1. The Company must generate additional earnings of $6.9 million to
achieve a coverage ratio of 1:1.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(5) | Due to the Companys loss for the year ended December 31, 2002, the ratio coverage was less than 1:1. The Company must generate additional earnings of $7.3 million to
achieve a coverage ratio of 1:1.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------