How were you trying to uninstall LW? If you attempted to do it via the add/remove control panel, that's not the way to do it. Start menu > Programs > LW > Uninstall.

Also, reinstalling LW will uninstall the previous version at the beginning of installation.

Yes that is the report. What it tells me (& I can't always read them properly) is that you should probably delete the LW preferences. Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.) Do both steps because one is the older location, one is the newer. Yours could be in either location. Do this before you attempt to reinstall LW. What's more, when you reinstall, get the "Offline" LW version not the recommended one!