| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 29-Nov-07 | Northland Securities | Upgrade | Under Perform | Market Perform | | 10-May-07 | Northland Securities | Downgrade | Market Perform | Under Perform | | 22-Feb-07 | Matrix Research | Upgrade | Hold | Strong Buy | | 29-Dec-06 | Matrix Research | Downgrade | Buy | Hold | | 1-Sep-04 | Roth Capital | Initiated | | Strong Buy |
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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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