| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 24-Nov-08 | Needham | Initiated | | Buy | | 6-Oct-08 | Oppenheimer | Initiated | | Perform | | 3-Oct-08 | Kaufman Bros | Initiated | | Buy | | 24-Oct-07 | Needham & Co | Upgrade | Hold | Buy | | 21-Jul-06 | Needham & Co | Downgrade | Buy | Hold | | 20-Oct-03 | Needham & Co | Upgrade | Hold | Buy | | 1-Dec-00 | Adams Harkness | Initiated | | Buy | | 15-Feb-00 | Needham & Co | Upgrade | Buy | Strong 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 | 3 | 3 | 3 | 3 | | Underperform | 0 | 0 | 0 | 0 | | Sell | 0 | 0 | 0 | 0 |
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