The first point of investigation with Linux crashes is the hardware. The software itself is very stable (although Vmware has crippled my machine a couple of times recently). First suspect would be overheating: is your box overclocked, or full of disks or something? Try taking the case off and pointing a desk fan into it to see if that makes the problem go away. Also, give your RAM a good wiggle as that's often a cause of problems. Investigation tools are non existent AFAIK, but you could use some imagination. You could write a one line script with writes the process table to a file every second, along with the time and date. That would at least show you when the machine crashed and what it was doing.

I installed Linix 6.4 last week and have so far experienced 2 unexplained crashes.

On both occasions the machine had no users logged on and was doing nothing special. Everything was frozen and the machine wouldn't ping. Nothing in the message log except a gap until I rebooted.

Can anyone tell me what disagnostics/logs can I switch on in an attempt to trap what is going wrong next time it happens ?

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