Just got the new iMac (top end 20 inch model) custom configured to add more storage. The Mighty Mouse does not work properly; it constantly clicks the side buttons if I just barely touch the mouse at all. I managed to disable the side buttons, but I can still hear the mouse making the clicking noise as if I was pressing them. Also, I have to click extremely far to the right to make the right click work. I have tried plugging it into both the back of the computer and the keyboard, and I get the same effect. Other brand (read: dell / logitech) mice work fine. The Mighty Mouse works, but it CONSTANTLY tries to press the side/expose buttons. The USB ports on the keyboard work for every other device (iPod, other mice) that I have tried. I tried the Mighty Mouse on my Macbook and three iMacs at work, and it works FINE on every computer except for my new iMac. I swapped my Mighty Mouse for one of the ones at work and it still does not work properly on my iMac. I called Applecare about it, and I was informed that the USB slots on the keyboard "are not for mice, but for hard drives and flash drives" (I'm serious). I am just curious if anyone else is having this issue. I JUST got all of my stuff transferred to it, and I really do not want to be without it over something as minor as this; however, I am hesitant, as this could be a sign of things to come. Anyone else having this issue, or have any thoughts?