I just got a new 20" 2.4 GHz with the 3 year extended AppleCare. On my last Mighty Mouse, the scroll ball stopped rolling after about a year. If the one that comes with my new Mac breaks, will I be able to claim that under AppleCare and get a new one? Right now, I'm kind of hesitantly using the scroll ball so it won't get stuck again. Thanks in advance if anyone knows.