Re: Killed my 6800GT - did the AGP slot do it??
Shocking? Nah, why didn't you stop it at the BIOS screen is what you should ask yourself, considering you already saw corruption there.
Saying the AGP slot did it is half right, if the 6800GT didn't have its molex plugged in at the time the card would have probably survived. The combination of a bad seated card and the 6800GT recieving power from the PSU directly is what killed it I think, then allowing the corruption to reach windows where the graphics card BIOS then increase the voltage to the card made it worse.
Oh well live and learn, shame it was a nice piece of hardware.