Before you uninstalled LW, was it constantly restarting & refusing to stay closed?

There are some other fixes (besides the BFU) to try in the thread below.
http://www.gnutellaforums.com/genera...s-options.html

Also try downloading AVG Free AV, update it & scan your computer...see if it finds any nasties. There's a link for download here: AVG Anti-Virus Free Edition

If you're still stuck, go to one of the help sites listed in my first link...they offer specialised help for malware problems