troubleshoot lockups

I've got a machine here running Suse 10.0 and it locks up hard about
every 48 hours. I've been poking around and haven't found much but I
have suspicion that the lockups are dhcp related. My question is are
there any tips on how to go about troubleshooting this? I've looked at
log files and found nothing. Which logs should I be looking at and what
should I look for? I'm assuming that there should be something in a log
somewhere that should help track this down. I have several other
machines here running older Suse versions and a couple of windows
machines all running fine.

I realize this may be a little vague and I'd be happy to elaborate on
any point. I'm just trying to get the ball rolling so I can make some
progress.
.

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