After years of wonderful stability, my Cube took a dive yesterday. It began with a freeze (not a KP, but a freeze, the first I've ever seen in OSX), it failed to wake up from "deep" sleep a couple of times, and then today it KP'ed in Safari (also a first). I ran the Hardware Test CD and it detected bad RAM. I removed one of the 256k modules, and now (I think) all is well again. So here's the question: how can RAM that's been in the Cube for something like three years suddenly go bad? And no, it wasn't on account of a 10.3 upgrade -- I did that back in January.