Sick to death of gaming on MBPs (since 2006!). They overheat and throttle down. Maybe it's time to finally give in and buy an iMac at this next update, especially as I hear they're planning on making the MBPs thinner - great for most people, not great for guys like me. Doing some searches and saw that iMacs also have heat issues reported however. Does anyone have heat issues so bad that the actual performance throttles down? Are most of the issues with the smaller sized iMac or does the 27inch have problems with heat too? Thanks in advance!