This morning (about 10:58) we had a Kernel Panic on our production CVS server. 
The errors were

CPU4: Machine Check Exception 0000000000000004
CPU5: Machine Check Exception 0000000000000004
Bank0: 00000000135
Bank1: 00000000135
Bank2: 00000000135

Kernel Panic - not syncing : CPU context corrupt


The machine was hard locked and I needed to hold down the power button to 
reboot it. On reboot it checked the drives (uptime had been about 300days +) 
and after a while everything came up fine.

The system is running Debian 4. Everything in Server Administrator is green. No 
errors logged from that time. Doesn't seem to be anything in /var/logs either.

Any suggestions on what *might* be the cause. Im going to run diags when I get 
a chance. However I don't want to run them while developers are working (they 
have a scheduled release Friday) in case they manage to knock theCPU off again.

Regards
B



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