| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 11-Feb-08 | Piper Jaffray | Downgrade | Buy | Neutral | | 29-Jun-07 | Oppenheimer | Downgrade | Buy | Neutral | | 11-Sep-06 | Oppenheimer | Upgrade | Neutral | Buy | | 23-Jun-06 | Ladenburg Thalmann | Initiated | | Hold |
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| Current Month | Last Month | Two Months Ago | Three Months Ago | | Strong Buy | 0 | 0 | 0 | 0 | | Buy | 0 | 0 | 0 | 0 | | Hold | 0 | 0 | 0 | 0 | | Underperform | 0 | 0 | 0 | 0 | | Sell | 0 | 0 | 0 | 0 |
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