Wirelessly posted (Mozilla/5.0 (iPod; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7) My recently purchased iMac Q-Core i5 just crashed on me. The screen went black, though I was still able to hit the multi-window key that showed me all open windows. But I was unable to do anything else. So I tried turning off the computer, as well as unplugging. When I try to power up it makes the usual whirling noise but then nothing, and the screen remains black with no functionality. Anyone encountered something like this? Is it dead and in need of service? I really don't like having my iTouch as my only computer!