Exhibit 12.1
 Ratio of Fixed Charges to Earnings
 Three Months Ended
    
    Years Ended December 31,March 31, 2011
    
    2010
    
    2009
    
    2008
    
    2007
    
    2006(in thousands)
    
    (in thousands)Fixed Charges:Interest Charges
    
    $
    790
    
    
    $
    3,593
    
    
    $
    2,691
    
    
    $
    2,361
    
    
    $
    722
    
    
    $
    4Series A Convertible Preferred
    
    $
    
    
    
    $
    
    
    
    $
    
    
    
    $
    735
    
    
    $
    511
    
    
    $
    Series B Perpetual Preferred
    
    $
    
    
    
    $
    131
    
    
    $
    
    
    
    $
    
    
    
    $
    
    
    
    $
    Series C Perpetual Preferred
    
    $
    2,562
    
    
    $
    2,336
    
    
    $
    26
    
    
    $
    
    
    
    $
    
    
    
    $
    Series D Preferred
    
    $
    45
    
    
    $
    
    
    
    $
    
    
    
    $
    
    
    
    $
    
    
    
    $
    Total Fixed Charges
    
    $
    3,397
    
    
    $
    6,060
    
    
    $
    2,717
    
    
    $
    3,096
    
    
    $
    1,233
    
    
    $
    4Loss Before Taxes and Non-controlling Interest
    
    $
    (6,658
    )
    
    $
    (22,128
    )
    
    $
    (15,633
    )
    
    $
    (11,109
    )
    
    $
    (5,916
    )
    
    $
    (3,899
    )Fixed Charges (Calculated Above)
    
    $
    3,397
    
    
    $
    6,060
    
    
    $
    2,717
    
    
    $
    3,096
    
    
    $
    1,233
    
    
    $
    4Earnings
    
    $
    (3,261
    )
    
    $
    (16,068
    )
    
    $
    (12,916
    )
    
    $
    (8,013
    )
    
    $
    (4,683
    )
    
    $
    (3,895
    )Ratio of Earnings to Fixed Charges with Preferred Dividend(1)
    
    
    -(7
    )
    
    
    -(6
    )
    
    
    -(5
    )
    
    
    -(4
    )
    
    
    -(3
    )
    
    
    -(2
    )
 
 (1)
    
    For purposes of determining the ratio of earnings to fixed charges, earnings are defined as income from continuing operations before
income taxes and non-controlling interest, plus fixed
charges and amortization of capitalized interest, less capitalized interest. Fixed charges consist of
interest incurred (whether expensed or
capitalized), amortization of deferred financing
costs and an estimate of the interest within rental expense. All reported periods of the calculation of the ratio of earnings
to fixed charges exclude discontinued operations.(2)
    
    Earnings were inadequate to cover fixed charges for the year ended December 31, 2006 by $3.9 million(3)
    
    Earnings were inadequate to cover fixed charges for the year ended December 31, 2007 by $5.9 million(4)
    
    Earnings were inadequate to cover fixed charges for the year ended December 31, 2008 by $11.1 million(5)
    
    Earnings were inadequate to cover fixed charges for the year ended December 31, 2009 by $15.6 million(6)
    
    Earnings were inadequate to cover fixed charges for the year ended December 31, 2010 by $22.1 million(7)
    
    Earnings were inadequate to cover fixed charges for the three months ended March 31, 2011 by $6.7 million