Scott, All the memory is first rate stuff, DDR2 and new. Not sure if it *could* be a memory problem, as I've not dropped back to the 256 config to see if they go away but the whole machine crashed last night, and am now just going to do a memtest86, then reinstall. I never did quite like the way I partitioned things in the get-go, plus I'll add a raid device to boot. Thanks... Sam