It's a virus that causes LW to continually open up on it's own. Deleting LW won't get rid of the virus.
Try the fix here:
To fix the limewire keeps popping up / no taskmanager bug do the following
Try scanning you system with
AVG Anti-Virus Free. I seem to remember somone posting that it fixed it for them.
More virus info in this thread:
WARNING: Viruses on network you should be aware of!
Another good thread:
Anti-virus protection and so on
If you can't figure it out try these sites for help:
Spyware Warrior :: Index CastleCops® » Security Forums SpywareInfo Forum FAQ - SWI Forums
Good luck!