Any one else having a problem with their might mouse? Mine all of a sudden will not scroll down, it will scroll up and sideways but not down. i have a new 20inch iMac. How do you take the damn thing apart maybe it just needs to be cleaned? 
EvilDoc said:unpluging was a no go, didnt work neither did various restarts..
livingfortoday said:Yeah, it's a common problem. Your mouse needs to be cleaned. What worked for me was wiping the scrollball with a moist paper towel, and then rubbing it vigorously against a white piece of paper. I mean, you have to do it with some force, just roll that sucker around. Should work then, hopefully.