| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 30-Sep-08 | Roth Capital | Initiated | | Hold | | 12-Oct-07 | Northland Securities | Initiated | | Outperform | | 7-Dec-06 | Feltl & Co. | Upgrade | Hold | Buy | | 27-Sep-05 | Miller Johnson | Upgrade | Neutral | Buy | | 19-May-04 | Oppenheimer | Downgrade | Buy | Neutral | | 21-Aug-03 | Dougherty & Company | Upgrade | Neutral | Buy | | 28-May-03 | Dougherty & Company | Downgrade | Buy | Neutral | | 29-Jan-03 | Fahnestock | Initiated | | Buy |
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| Current Month | Last Month | Two Months Ago | Three Months Ago | | Strong Buy | 1 | 1 | 1 | 1 | | Buy | 1 | 1 | 1 | 1 | | Hold | 1 | 1 | 1 | 1 | | Underperform | 0 | 0 | 0 | 0 | | Sell | 0 | 0 | 0 | 0 |
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