Exhibit 11.1

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

(In thousands,
except ratios)



|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|-------------------------------------------------------------------- |  | ------------------------------- | ------- | ------------------------ | - | ------- |  | ---- | ------- |  | ---- | ------- | ---- |  | ---- | ------ |  | - | ----- |  | - | ------ | -
|                                                                     |  | Nine Months Ended September 30, |         | Years Ended December 31, |  
|                                                                     |  | 2007                            |         | 2006                     |   | 2006    |  | 2005 |         |  | 2004 |         | 2003 |  | 2002 |       
|Earnings                                                             |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Income (loss) before income taxes                                    |  | $                               | 83,560  |                          | $ | 144,115 |  | $    | 189,098 |  | $    | (25,697 | )    |  | $    | 9,246  |  | $ | 990   |  | $ | (6,882 | )
|Fixed charges                                                        |  |                                 | 97,382  |                          |   | 74,825  |  |      | 89,086  |  |      | 25,795  |      |  |      | 3,269  |  |   | 528   |  |   | 618    |  
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total earnings                                                       |  | $                               | 180,942 |                          | $ | 218,940 |  | $    | 278,184 |  | $    | 98      |      |  | $    | 12,515 |  | $ | 1,518 |  | $ | (6,264 | )
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Fixed charges                                                        |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Interest expense and amortization of finance costs                   |  | $                               | 96,492  |                          | $ | 74,233  |  | $    | 88,414  |  | $    | 25,551  |      |  | $    | 3,178  |  | $ | 476   |  | $ | 558    |  
|Rental expense representative of interest factor                     |  |                                 | 890     |                          |   | 592     |  |      | 672     |  |      | 244     |      |  |      | 91     |  |   | 52    |  |   | 60     |  
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total fixed charges                                                  |  | $                               | 97,382  |                          | $ | 74,825  |  | $    | 89,086  |  | $    | 25,795  |      |  | $    | 3,269  |  | $ | 528   |  | $ | 618    |  
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Ratio of earnings to fixed charges                                   |  |                                 | 1.9     |                          |   | 2.9     |  |      | 3.1     |  |      | (1)     |      |  |      | 3.8    |  |   | 2.9   |  |   | (3)    |  
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total fixed charges                                                  |  | $                               | 97,382  |                          | $ | 74,825  |  | $    | 89,086  |  | $    | 25,795  |      |  | $    | 3,269  |  | $ | 528   |  | $ | 618    |  
|Pre-tax preferred dividend requirements                              |  |                                 |        |                          |   | 352     |  |      | 352     |  |      | 680     |      |  |      | 507    |  |   | 456   |  |   | 447    |  
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Total fixed charges plus preference dividends                        |  | $                               | 97,382  |                          | $ | 75,177  |  | $    | 89,438  |  | $    | 26,475  |      |  | $    | 3,776  |  | $ | 984   |  | $ | 1,065  |  
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  
|Ratio of earnings to combined fixed charges and preference dividends |  |                                 | 1.9     |                          |   | 2.9     |  |      | 3.1     |  |      | (2)     |      |  |      | 3.3    |  |   | 1.5   |  |   | (4)    |  
|                                                                     |  |                                 |         |                          |   |         |  |      |         |  |      |         |      |  |      |        |  |   |       |  |   |        |  

---

|(1) | 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.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(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 $26.4
million to achieve a coverage ratio of 1:1.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Due to the Companys loss for the year ended December 31, 2002, the ratio coverage was less than 1:1. The Company would have had to generate additional earnings of $6.9
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 would have had to generate additional earnings of $7.3
million to achieve a coverage ratio of 1:1.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------