Hey guys, Ive had my iMac for about 9 months and havnt had any issues with it until the past 2 months. The first issue was that i would leave it running for the day and i would restart and get the flashing folder issue. I would then go through all the appropriate steps- unplugging from the power source for 45 seconds +, try booting it with the OSX cd in, ect. At first these steps worked. The next issue i had was a power outage. I followed the same procedure when i went to start my imac up again (mind you it was within 10-15 minutes of it being turned off) and these steps did nothing and the flashing question marked folder appeared every time. I called Apple support and after 2 hours they insisted that it was a faulty hard drive. I let the imac sit for the rest of the day and before i went to bed i decided to give it one more shot. It booted up just fine. Ive come to the conclusion that im only getting the boot error when it has been running for long periods of time and that the casing feels hot when i try restart. I was wondering if you guys could let me know if my theory of over heating causing the boot error is correct, and if so is there anything i can do myself to help correct the problem? I really want to avoid going to a mac store because its so far away from my location. Any help or comments are very well appreciated. thanks in advance!