| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 15-Mar-07 | Merriman Curhan Ford | Downgrade | Buy | Neutral | | 15-Nov-06 | Nollenberger Capital | Downgrade | Buy | Neutral | | 14-Nov-05 | WR Hambrecht | Initiated | | Buy | | 4-Nov-05 | Nollenberger Capital | Upgrade | Neutral | Buy | | 11-Nov-03 | Merriman Curhan Ford | Initiated | | Buy | | 4-Apr-00 | FS Van Kasper | Initiated | | Strong 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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