Hey, I have an optical mouse that's plugged in to my computer via PS/2. I have altered the Advanced Mouse settings to maximize optical reading and buffer size. However, some times, when playing games (specifically, Unreal Tournament), the mouse will randomly jerk really fast and I'll be looking somewhere different. It's REALLY annoying and I wonder if it's my mouse, mouse settings, Windows XP, Unreal Tournament, PS/2 or USB configuration (I can have either), or anything else. Any clue as to what could be screwy?