Odd kernel error messages

[Digimer]

Any ideas on what this might mean?

Message from syslogd at lework at Mar 16 07:11:18 ...
 kernel:[57255.286992] Uhhuh. NMI received for unknown reason a1 on CPU 0.

Message from syslogd at lework at Mar 16 07:11:18 ...
 kernel:[57255.286997] You have some hardware problem, likely on the PCI
bus.

Message from syslogd at lework at Mar 16 07:11:18 ...
 kernel:[57255.287002] Dazed and confused, but trying to continue

Fedora 14, x86_64.

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