So I got my iMac today, played with it all day, and it wasn't until I played WoW for about a half hour with all settings at full tilt on WiFi that it locked up. The thing was hot as hell, and the fans weren't even trying. So taking a lesson from other users on the Apple Support Boards, I installed SMCFanControl I set most of the settings to about the mid-range, its slightly louder, but nothing I really notice. I actually feel air coming from the vents though. Been going for about an hour with WiFi on without a lockup. Now, you can hear the fans quite a bit more at this level. What I am looking for is if some people want to install this, try these settings and see if it locks up, if not, then lower the fans a bit. See if we can't get them low enough to where they aren't noticeable when using the iMac, but are actually cooling better than whatever Apple set them to do. I need to get to bed soon so WoW is going off in a bit, but if you try this, let me know your results!