"Eric L. Blevins" <eblevins@insight.rr.com> writes:
> From: "Andrew Sullivan" <andrew@libertyrms.info>
>> Have you checked your physical memory for flaws?
>>
> Yes, I have checked the memory, it is fine.
I'd suggest checking harder ;-). I think an unreliable section of
memory is by far the most probable explanation. However, if you want
to dig for a software reason, try collecting stack backtraces from
the crashed processes' core dumps to see if there's any pattern.
regards, tom lane