I recently bought a second hand low profile 256MB PC133 RAM stick for my Bondi Blue iMac G3, which was running on 96MB (32MB+64MB). I took out the 32MB stick today, and replaced it with the 256MB one. Booted the machine up... it only registers it as a 128MB stick? Swapped places with the 64MB stick... nope. I think this is the Rev. B model (6MB of VRAM), but even if it were the Rev. A, it should detect the 256MB stick fine. What's going on here? Is this a known issue? Is the 64MB messing with it?