| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 20-Nov-06 | BWS Financial | Downgrade | Buy | Hold | | 3-Feb-05 | Needham & Co | Upgrade | Underperform | Buy | | 17-Aug-04 | Brean Murray | Downgrade | Buy | Hold | | 23-Jul-04 | Kaufman Bros | Downgrade | Buy | Hold | | 17-Nov-03 | Kaufman Bros | Initiated | | Buy | | 31-Oct-03 | WR Hambrecht | Initiated | | Buy | | 1-May-03 | Needham & Co | Upgrade | Hold | Buy | | 9-Oct-02 | Needham & Co | Initiated | | Hold | | 23-Mar-01 | Kaufman Bros | Upgrade | Accumulate | Buy | | 21-Mar-01 | W.R. Hambrecht | Upgrade | Mkt Neutral | 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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