Something else to keep in mind: some people screw around with their 'puters a lot. Download iffy software. Plug things into the wrong ports. Don't use good surge protectors. Let their kids play with the computer. And then when they get a problem they "forget" to mention: "oh yeah, I (or, my kid) frazzled the foomer, but I can't imagine how that could have caused this problem" -- I looked at one computer that had several versions of the System Folder. -don