I have been down that road also. The telling thing is that while running, I can freeze it up totally, and I can do it on demand!

wiggle the power adapter [used more than 1] also freezes if you plug in either firewire, or usb device. I can at times [not on demand] make it freeze simply by picking it up!!! Very confusing, and I know from hours on the net, that others have had this same anomoly!

I am going to eventually try the "heat" method, wish I knew where to apply said heat. If I could prove it was in the "ram area" that would be kooool.

RP