Just got this machine yesterday brand new. Had finished installing all my software (a day long process) and then hooked it up Firewire to a Macbook via target mode to do a quick defrag before I was gonna add a bunch more files. The HD was on the Macbook's desktop. So I had started iDefrag and it was analyzing the HD. Hadn't started actually defraging yet. All of a sudden the HD disappeared off the desktop and the fans came on full blast it seemed. When you turn it on the fans come on like normal and you can hear the drive being accessed for a couple seconds, then stops and just sits there with the fans on low speed. It won't boot up on it's own, no monitors come on. Not responsive to keyboard commands. Called Apple care, they walked me through all the things I had already done, to no avail. I pulled the 320GB HD and put it in an external USB eSATA dock - the drive mounted right up on the Macbook, so the drive is not bad. What the hell is going on?