| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 11-May-07 | Feltl & Co. | Downgrade | Buy | Hold | | 26-Apr-07 | Roth Capital | Upgrade | Sell | Hold | | 13-Mar-07 | Roth Capital | Downgrade | Hold | Sell | | 3-Aug-06 | Roth Capital | Downgrade | Buy | Hold | | 8-Jun-05 | Merriman Curhan Ford | Initiated | | Buy |
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| Current Month | Last Month | Two Months Ago | Three Months Ago | | Strong Buy | | | | | | Buy | | | | | | Hold | | | | | | Underperform | | | | | | Sell | | | | |
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