Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges



|                                                             |  |                          |        |  |      |   |        |      |  |   |          |     |  |      |        |  |  |   |        |  
|------------------------------------------------------------ |  | ------------------------ | ------ |  | ---- | - | ------ | ---- |  | - | -------- | --- |  | ---- | ------ |  |  | - | ------ | -
|                                                             |  | Years Ended December 31, |       
|                                                             |  | 2006                     |        |  | 2007 |   |        | 2008 |  |   | 2009     |     |  | 2010 |       
|Income (loss) from continuing operations before income taxes |  | $                        | 41,531 |  |      | $ | 22,209 |      |  | $ | (133,076 | )   |  | $    | 16,035 |  |  | $ | (1,630 | )
|Fixed charges:                                               |  |                          |        |  |      |   |        |      |  |   |          |     |  |      |        |  |  |   |        |  
|Interest expense                                             |  |                          | 5,028  |  |      |   | 5,012  |      |  |   | 1,537    |     |  |      | 4      |  |  |   | 43     |  
|Interest relating to rental expense(1)                       |  |                          | 5,790  |  |      |   | 6,339  |      |  |   | 5,314    |     |  |      | 2,438  |  |  |   | 2,533  |  
|                                                             |  |                          |        |  |      |   |        |      |  |   |          |     |  |      |        |  |  |   |        |  
|Total fixed charges                                          |  |                          | 10,818 |  |      |   | 11,351 |      |  |   | 6,851    |     |  |      | 2,442  |  |  |   | 2,576  |  
|                                                             |  |                          |        |  |      |   |        |      |  |   |          |     |  |      |        |  |  |   |        |  
|Earnings available for fixed charges                         |  | $                        | 52,349 |  |      | $ | 33,560 |      |  | $ | (126,225 | )   |  | $    | 18,477 |  |  | $ | 946    |  
|                                                             |  |                          |        |  |      |   |        |      |  |   |          |     |  |      |        |  |  |   |        |  
|Ratio of earnings to fixed charges                           |  |                          | 4.84   |  |      |   | 2.96   |      |  |   | N/A      | (2) |  |      | 7.57   |  |  |   | 0.37   |  
|                                                             |  |                          |        |  |      |   |        |      |  |   |          |     |  |      |        |  |  |   |        |  



|(1) | The representative interest portion of rental expense was deemed to be one- third of all rental expense, except for the rental expense related to the off-balance sheet
financing leases, as described in the footnotes to the financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2008 which was deemed to be all interest.
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|(2) | For the year ended December 31, 2008 our earnings were insufficient to cover fixed charges; the amount of additional earnings needed to cover fixed charges for the
year was $133.1 million.
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