Re: GeForce 7600 GS freeze: "irq 114: nobody cared"
Running OpenGL programs and Games, would hang and lock my system too.. Also when running a memtest86+. Setting all relevent memory timing and voltage stuff fixed it for me.. I'm running FC5 with all the updates.. My system is rock solid now.. I'd just make sure the timings are correct too.. Can't hurt.. Other than that, not much else I can suggest... (Kernel 2.6.18-1.2257.fc5smp)
Edit: Oh, and the kernel command line I had to setup was just these settings.. "pci=nommconf combined_mode=libata", other than that, everything else is stock standard..