James Wilkinson wrote: [snippage]
Evidently a recent Intel system. Is it a P4 with hyperthreading or does it have multiple Xeons in?
Single P4 2.6GHz HT
You've evidently got an ATi graphics card. Which one? Have you loaded any drivers for it that *didn't* come with Fedora Core?
Radeon 8500LE, using drivers installed with Fedora
If that doesn't stabilise the system, and you do have a single hyperthreading Pentium 4, you might try booting with the non-SMP kernel.
Non-SMP kernel just restarts the machine over and over. I'll see how it goes with SMP kernel and the "noapic" line added.
Thanks, J
