Recently I have been having problems with my machine completely freezing up seemingly randomly. The display freezes in its current frame, and all I/O is completely unresponsive. It is not possible to SSH into it at this stage (ssh fails with a Host Unreachable error). The only remedy is a manual reset.
I was wondering how I could go about trying to figure out what is going on? What log files can I look at to figure out what happened just before the reset etc? Would be grateful for any help.