Agreed, but just to be complete...
Any pattern to when the machine KPs? When it's hot? When it's cold? When it's heating up? When it accesses an external device that you installed drivers for?
A *slightly* loose RAM stick can drive you bonkers - it'll test out fine 99 times out of 100, but when the thermal expansion/contraction hits *just* the right point, *fzzt* you get a KP. (Ditto for a slightly loose drive cable, etc... I pop and reseat pretty much everything on a machine that's KPing randomly. Often, it fixes it. Laptops that get hauled/knocked around are particularly susceptible.)
Does Apple's extended RAM check finally do a thorough diagnosis? It used to be that it didn't, and you had to check with Gauge Pro under OS 9. (Can't recall the specific test... I think I need my memory checked...)
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