Uninstalling LW via Control Panel is the wrong way to do it & can cause problems. The right way to uninstall LW is via start > all programs > LW > use the uninstall option there.

Open Task Manager & check whether there's a LW process running. If there is, end the process.
Then use your computer's search to look for all files & folders with limewire in the name & delete what you find.

The problem that you had with LW that made you want to uninstall it...was LW restarting all the time & refusing to stay closed? If that's the case, your computer's probably infected (uninstalling LW won't help...you need to get rid of the malware). There are a few different fixes to try in the thread below.
http://www.gnutellaforums.com/genera...s-options.html

If you're still stuck, try going to one of the help sites listed in that thread.
Always make sure that you're using a good AV program. Keep it updated & use it to scan all files that you've downloaded, before you open them.