| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 22-Dec-08 | Dougherty & Company | Initiated | | Neutral | | 7-Feb-08 | Northland Securities | Initiated | | Outperform | | 21-Jun-06 | Global Crown Capital | Initiated | | Overweight | | 28-Jun-05 | WR Hambrecht | Initiated | | Hold | | 9-Jan-01 | UBS Warburg | Downgrade | Buy | Hold | | 9-Jan-01 | USB Piper Jaffray | Downgrade | Buy | Neutral | | 27-Oct-00 | USB Piper Jaffray | Downgrade | Strong Buy | Buy | | 19-Jul-00 | UBS Warburg | Initiated | | Buy | | 18-Jul-00 | USB Piper Jaffray | Initiated | | Strong Buy | | 18-Jul-00 | CSFB | Initiated | | Buy |
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| Current Month | Last Month | Two Months Ago | Three Months Ago | | Strong Buy | 1 | 1 | 1 | 1 | | Buy | 0 | 0 | 0 | 0 | | Hold | 1 | 1 | 1 | 1 | | Underperform | 0 | 0 | 0 | 0 | | Sell | 0 | 0 | 0 | 0 |
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