I'd left my PC on for a few days, and it had been running fine. I went to work in the morning after checking my email etc, and all seemed good. Got home from work and FAH had crashed. So I tried to restart it, seg fault. Quit the shell and tried to load a new one, nothing. Killed KDE, and then in the console tried to reboot. Three finger salute did nothing, tried su so I could shutdown manually, seg fault on su. Had to do a hard reboot, and then it seemed fine. I left it on for a few hours and then shutdown over night, and now it's been on 2 hours and things are fine. My CPU usage was at 0%, and I had heaps of memory free. I have new memory, but nothing is oc'd. I am running the mem and the CPU asynchronous, could this cause it? Any other ideas?