You sound like you may have a virus....Does limewire keep popping up when you close it down ??? if so try this fix...
http://www.gnutellaforums.com/showpo...&postcount=141
Also check out this sticky....
WARNING: Viruses on network you should be aware of!
If you don't have any luck with fix number 1, go to Norbiesworld, his link is at the bottom of the sticky....
He will help you get rid of it...