Don't forget overheating.  I was having some problems with my machine recently, and it turned out that at full CPU load, my CPU temperature was spiking to 88.8 degrees C.  Dust had clogged everything.  The program cpuburn is also good for putting a full load on the CPU.

~John

On 10/28/05, Mathias Stearn <[EMAIL PROTECTED]> wrote:
I'd say most lockups on linux when running "non-beta" code come from
hardware. first off if you are overclocked, scale it back. Next run
memtest. if that passes try compiling the kernel for a few times back
to back. If it bombs out with an internal compiler error, it is 99.9%
likely you have a bad cpu.

On 10/28/05, J. Milgram <[EMAIL PROTECTED]> wrote:
> Any good techniques for diagnosing system freezups? My box occasionally,
> at random intervals, locks up while grabbing mail with fetchmail, so
> suspects are sendmail, procmail, my spam filter (simple python script
> with file locking), and fetchmail itself. And probably a dozen other
> things.
>
> thanks for any ideas...
>
> Judah
>

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