EXHIBIT 12.1
Ratio of Earnings to Fixed Charges
Our earnings are inadequate to cover fixed charges. The following table sets forth the dollar amount of the coverage deficiency (in thousands) for the periods indicated.
 
 
Year Ended December 31,
 
 
2011
 
2010
 
2009
 
2008
 
2007
 
EARNINGS:
                             
Net loss
  $ (11,345 )   $ (14,022 )   $ (2,903 )   $ (3,682 )   $ (4,442 )
Plus fixed charges
    58       56       64       74       72  
Total loss to cover fixed charges
    (11,287     (13,966     (2,839     (3,608     (4,370
           
FIXED CHARGES:
                                       
Interest portion of rental expense (see below)
    58       56       64       74       72  
DEFICIENCY OF EARNINGS TO COVER FIXED CHARGES
  $ (11,345 )   $ (14,022 )   $ (2,903 )   $ (3,682 )   $ (4,442 )
 
The estimate of the interest portion of rental expense is calculated as one-third of total rental expense for the period.