At a loss to debug this. Stops occur while doing anything. Only solution is to turn off - turn on and reboot. Nothing I can find in log files. I've uninstalled Livna nvidia driver on the off chance that was the problem. Is there anything I can do to isolate the problem? Turn on a trace or something?
Running F10 X64 with all fixes to date. Quad core Intel CPU. Nvidia display driver. 6 Gigabytes of memory.