Does anyone have any pointers as to where to start looking for the source of a machine lock up? It's a 2006 Mac Mini, running 10.6.8. When I say it locks up I mean keyboard and mouse lock up, can't ssh/vnc/remote desktop, if eye tv is playing it skips (like an old scratched cd). I don't get the Kernel Panic screen come up. What would be the best place to look for problems? Any specific error logs? I've tried AHT which reports back fine. I've reinstalled Mac OS, swapped out the HD.