The only threads I can find about your prob are
http://www.gnutellaforums.com/showth...alls+by+itself

and
http://www.gnutellaforums.com/showth...+automatically

Maybe one of your security programs is wrongly detecting LW as a threat & removing it?

*You can use the search (top right, between faq & home) to find info on just about any question, rather than waiting for ages for someone to answer you