|                                                                                                       |   | Years      ended May 31, |    |   | Five      months ended |   |    | Years      ended December 31, |   |
|------------------------------------------------------------------------------------------------------------|--------|--------------------------|---------|--------|------------------------|--------|---------|-------------------------------|--------|
|                                                                                                       |   | 2008                     |    |   | 2007                   |   |    | 2006                          |   |   | May      31, 2005 |   |   | 2004 |   |   | 2003 |   |
|  Fixed      Charges                                                                                   |   |                     |    |   |                   |   |    |                          |   |   |   |   |   |   |   |   |   |   |
|     Interest      expense excluding beneficial                                         |   |                     |    |   |                   |   |    |                          |   |   |   |   |   |   |   |   |   |   |
|           conversion      feature                        |   | $                        | 2,447   |   |                   | $      | 952     |                          |   | $ | 2,177 |   |   | $ | 1,024 |   |   | $ | 2,370 |   |   | $ | 2,346 |   |
|      Portion      of rental expense                                               |   |                     |    |   |                   |   |    |                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|           deemed      to represent interest              |   |                     | 474     |   |                   |   | 489     |                          |   |   | 521 |   |   |   | 328 |   |   |   | 338 |   |   |   | 637 |   |
|  Total      fixed charges                                                                             |   | $                        | 2,921   |   |                   | $      | 1,441   |                          |   | $ | 2,698 |   |   | $ | 1,352 |   |   | $ | 2,708 |   |   | $ | 2,983 |   |
|                                                                                                       |   |                     |    |   |                   |   |    |                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|  Earnings      before fixed charges                                                                   |   |                     |    |   |                   |   |    |                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|       Earnings      from continuing                                          |   |                     |    |   |                   |   |    |                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|            operations      before income tax        |   | $                        | (15,282 | )      |                   | $      | (18,774 | )                             |   | $ | (34,658 | ) |   | $ | (12,388 | ) |   | $ | (6,315 | ) |   | $ | (60,125 | ) |
|        Fixed      charges                                               |   |                     | 2,921   |   |                   |   | 1,441   |                          |   |   | 2,698 |   |   |   | 1,352 |   |   |   | 2,708 |   |   |   | 2,983 |   |
|  Total      earnings before fixed charges                                                             |   | $                        | (12,361 | )      |                   | $      | (17,333 | )                             |   | $ | (31,960 | ) |   | $ | (11,036 | ) |   | $ | (3,607 | ) |   | $ | (57,142 | ) |
|                                                                                                       |   |                     |    |   |                   |   |    |                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|  Additional      earnings to achieve a 1:1 ratio of   earnings      plus fixed charges |   | $                        | 15,282  |   |                   | $      | 18,774  |                          |   | $ | 34,658 |   |   | $ | 12,388 |   |   | $ | 6,315 |   |   | $ | 60,125 |   |