| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 27-Nov-06 | Rochdale Securities | Initiated | | Buy | | 14-Nov-06 | Needham & Co | Downgrade | Buy | Hold | | 10-Nov-05 | Thomas Weisel | Downgrade | Outperform | Peer Perform | | 2-Mar-05 | Thomas Weisel | Initiated | | Outperform | | 2-May-00 | Needham & Co | Downgrade | Strong Buy | Buy | | 13-Mar-00 | Needham & Co | Upgrade | Buy | Strong Buy | | 1-Dec-99 | FS Van Kasper | Initiated | | Strong Buy | | 1-Dec-99 | Needham & Co | Initiated | | 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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