My iMac will not respond to left click. I was working and when i went to click on something in the dock, nothing happened. I tried a bunch of times and nothing...tried right clicking and it worked but i cant use OS X just with right clicks...i had just dropped my Magic Mouse so i decided to plug in a USB mouse and it still didn't work. So then I rebooted holding down the power button. When it came back on (to the white screen) the optical drive made a noise like it was trying to eject a CD (which as you know happens when you hold the left mouse button) so that really confused me even more. I am able to type this from Windows 7 where left click does work. However, I only gave windows 90GB so i can't use Windows forever. Any suggestions? Thanks in advance.