I just cleaned about 8lbs of cat hair out of my mouse "ball". I am looking at getting an optical mouse and I had a couple of questions: Is it cat hair proof? ie: Will I have to clean it often? Are there any disadvantages to the optical mouse? I know early models required a special grid design on the mouse pad. Any specific model recommendations are appreciated. I don't need anything fancy or cordless, but if there are some cool features to be had, I might consider going beyond basic. ------------------ "Strange women lyin' in ponds distributin' swords is no basis for a system of government!" 300+ Reasons why I drive A 1991 Cavalier.