I'm on my second iMac in a week (my first one decided that it didn't want to turn on anymore) and I'm having a serious problem with overheating. Whenever I burn a cd or read from a cd (for example, installing windows xp) the machine shuts down with no warning or anything. I assume it's overheating because, well I can't see any other reason for it do this. The disks are hot as well when I eject them. I'm really considering getting rid of this iMac and switching back to Windows, after just singing the iMacs praises in another thread. These are also my first ever iMac's and they haven't made a very good impression. When it works it's incredable, however I'm on my second one because of stupid problems with them. Anyone had any experience with this before and know how to fix it? Thanks in advance.