So far none of the suggestions has helped me. I finally decided to uninstall Limewire and try bearshare, but the same problem, random lockups. That and bearshare is pretty lousy for search results. Oh well. I ended up getting so fed up i uninstalled limewire and bearshare and im running clean, no lockups or anything. Very odd indeed.

Grandpa thanks for your help and the link to that ram tester was awsome i use that tool a bunch (I hope this credit is going to the right person) so thanks an keep up the suggestions.

FYI i am using an original copy of windows xp home, but i know what you mean about people who use hacked operating systems they are more problems than they are worth.