On three occasions 9.1 seems to have disabled Intellimouse Explorer...that is, on startup the computer freezes with the cursor in the upper left hand corner, and when I restart, and go to Conflict Catcher, all Intellimouse extensions are disabled. If I reenable them and restrt, things will work for awhile, then Explorer will freeze, and will not quit, I will force-quit it and restart, and the Intellimous extensions are again disabled. Very weird.