I happenned into a free B&W G3, (rev a) and a cheap used G4 500 mhz ZIF upgrade card. It seems to funcion normally at every-day tasks, but whenever I launch RC-5, it panics within 10 seconds. The log reads:
panic(cpu 0): Uncorrectable machine check: pc = 00000000000035BC, msr = 0000000002043000, dsisr = 42000000, dar = 00000000E0011000
AsyncSrc = 0000000000000000, CoreFIR = 0000000000000000
L2FIR = 0000000000000000, BusFir = 0000000000000000
(etc)
Which I thought was interesting because I've never seen that "Uncorrectable machine check" bit in a Panic log before.
Is it just me, or is this not a supported config for RC-5? Running OS 10.3.9, downloaded the most recent client.