| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 19-Aug-09 | Robert W. Baird | Initiated | | Outperform | | 29-Jul-09 | Roth Capital | Initiated | | Buy | | 13-Feb-09 | Ladenburg Thalmann | Initiated | | Buy | | 18-Dec-07 | Merriman Curhan Ford | Initiated | | Buy | | 24-Oct-05 | Ferris Baker Watts | Initiated | | Buy |
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| Current Month | Last Month | Two Months Ago | Three Months Ago | | Strong Buy | 2 | 2 | 2 | 2 | | Buy | 1 | 1 | 2 | 2 | | Hold | 0 | 0 | 0 | 0 | | Underperform | 0 | 0 | 0 | 0 | | Sell | 0 | 0 | 0 | 0 |
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