1st step to fixing the problem~!!!!!!!!
ok, so i've had my imac 24" for almost two weeks now, and the first day it was fine. since i live in colorado the climate changes all the time. suddenly when the coldfront came in, my mightymouse stopped responding to "right clicks" and my "side clicks" are so sensitive that it will click about 50 times when your hand is just near it. its taken me about two weeks to have figured this out.
i've swapped my mouse out 3 times already and it always seemed to work fine at the apple store. but they were nice enough to swap out my mouse 3 times.
anyways, if you have an iMac like i do, try taking one hand and touching the metal base of the mac and right click away (make sure you've got it set to secondary button) and if you're having problems with the side-buttons, you'll notice that they've fixed them self.
now why the hell would touching the base of the imac magically fix your problem? because it's not a hardware issue; its an electrical issue. something is faulty with the groundwiring with the cord or outlet that you have the imac plugged into. try taking the mouse to someone's house who doesnt have that problem and you'll find that the MM (mighty mouse) works fine.
still think that its your mac? take your mac to a different location (somewhere other than your house ie: neighbor or friend) and see if your oversensitivity of the side-buttons is still going or if your ryte click now works.
touching the base of my mac is all well and good, but i need my left hand on the keyboard, now how the heck do i fix the ground issue?
if this has fixed your problem please let me know if anyone has figured out the electrical ground issue. PLEASE!