Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3) Not really sure where to post this but here goes. My iMac crashed hard while playing civilization v. The graphics was distorted and it was totally unresponsive. I shut down and tried to boot, but it booted back into the game (I think - the graphics was still distorted). Still unresponsive I tried to reboot again, but this time even the boot screen was covered with graphical "artifacts" and it never completed the boot sequence. Rebooted in safe mode, but with the same result. Any suggestions?