Usually when LW keeps starting by itself, it's a virus. There's info here
http://www.gnutellaforums.com/showth...threadid=39612

http://www.gnutellaforums.com/showth...threadid=41432

Within the second thread is a link to norbiesworld. If you go to his site & register (it's free), he'll be able to help you get rid of the virus.

How did you uninstall LW? If you do it through add/remove programs, you can run into trouble! (go to start > all programs. Highlight LW & choose the uninstall option from there).
It does sound like the virus to me, since you've uninstalled LW & it's still trying to start. Possibly it just showed itself at the same time as you upgraded Ffox. I've never had a prob with Ffox & LW. Go & see Norbie