Micah Yoder <micah(at)yoderdev(dot)com> writes:
> ... I am wondering if you all think this sounds like a hardware
> problem.
Yeah, it does. Have you tried running memtest86?
It could also be a kernel problem --- I'm not sure 2.4.16 had all the
SMP bugs flushed out of it. Consider getting a later kernel.
regards, tom lane