Hi For about a month now my computer has been freezing up during defragging sessions. I have Diskeeper 2007 home edition. Recently it's now been freezing up after an hour but only when I try to defrag or scan for viruses using Windows Defender and AOL Safety & Security. I got the advice to clean my registry but that didn't help. I used a free version of Registry Patrol & Regcleaner. I have Windows XP and I don't know much about computers when it comes to issues like these. Could someone please tell me what to do?