I'm using a MS Optical mouse on my ibook G4. I've been trying to increase the its tracking speed, I go to the system prefs to make it faster but it never works. I put the tracking speed to the fastest possible speed but when I close the system prefs window, the tracking speed returns to a very slow speed. When I go back to the tracking speed adjustment, its still at the fastest speed, and the mouse responds at a fast speed but when I close the system prefs window, it again goes to a slow speed. I've tried adjusting the tracking speed though the system mouse prefs and through the MS intellipoint settings and the same things happens. Can anyone help me fix it?