| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 13-Nov-09 | B. Riley & Co | Upgrade | Neutral | Buy | | 23-Apr-09 | Stifel Nicolaus | Downgrade | Buy | Hold | | 11-Feb-09 | B. Riley & Co | Downgrade | Buy | Neutral | | 14-Apr-08 | Dougherty & Company | Downgrade | Buy | Neutral | | 3-Dec-07 | Oppenheimer | Upgrade | Neutral | Buy | | 13-Nov-07 | Stifel Nicolaus | Initiated | | Buy | | 20-Jul-07 | DA Davidson | Initiated | | Neutral | | 26-Feb-07 | Oppenheimer | Downgrade | Buy | Neutral |
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| Current Month | Last Month | Two Months Ago | Three Months Ago | | Strong Buy | 1 | 1 | 1 | 0 | | Buy | 0 | 0 | 0 | 0 | | Hold | 2 | 2 | 2 | 3 | | Underperform | 0 | 0 | 0 | 0 | | Sell | 0 | 0 | 0 | 0 |
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