They just told me there was an issue with the Motherboard. I ask, as I work on computers all the time, and wanted to know. It's not failed since I've got it back, running 24/7, except for W7 patches, or some reason I want it off.
It was in sleep mode (power light off) the other day, but then I remember I dropped the remote the night before, after I turned the TV off. I think it hit the power button when it fell, and went into sleep mode, as I never leave it that way.
Please note that I ordered mine before they shipped, so I know mine was from the very first batch.
I don't remember which temp monitor I was using, but I know one of the temp sensors reported the correct temp, and mine was fine before the crash. I think it was Core Temp.
I had lots of weird error/shutdown messages in the event log, like it was trying to run something, and could not find it.