I bought a used 1.33 15" PB about two weeks ago, got it late last week, and am just getting around to checking it out. 10's a big difference from 9.1 (to say nothing of the upgrade from a 6400). Anyway, the sytem's got the previous owner's information in it - all her settings, etc. I emailed her for her password (haven't heard back yet), but then I thought it might be better to simply clean install from the system disks and start w/ a fresh drive. There's nothing on the machine I need that I don't have backed up already; is there any reason not to proceed w/ a clean install?