| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 28-Feb-08 | BMO Capital Markets | Upgrade | Underperform | Market Perform | | 8-Nov-06 | Nollenberger Capital | Initiated | | Buy | | 26-Oct-06 | CIBC Wrld Mkts | Downgrade | Sector Outperform | Sector Perform | | 27-Apr-06 | Canaccord Adams | Downgrade | Buy | Hold | | 24-Mar-06 | Rochdale Securities | Initiated | | Buy | | 10-Mar-06 | Caris & Company | Initiated | | Above Average | | 23-Feb-06 | CIBC Wrld Mkts | Upgrade | Sector Perform | Sector Outperform | | 5-Dec-05 | Adams Harkness | Upgrade | Buy | Strong Buy | | 27-Jul-05 | RBC Capital Mkts | Downgrade | Outperform | Sector Perform | | 16-Jun-05 | Wells Fargo Sec | Initiated | | 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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