Sure sounds like "Bad Memory" to me. Have you tried just the stick you think is good? or maybe get a hold of some from someone else...
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Macbook 2.1 core duo 1gig 160gb sata iMac g5 w/1 gig 160gig all-in-one and SWEET! iBook G4 IGhz Quicksilver Dual 800's iPod touch "Guys, I think we just lost the platform here" Pete Conrad When in doubt, try SCE to AUX