No, it doesn't suck.
When you install a new version of LW it should automatically uninstall the previous version on your computer. If you try to uninstall through add/remove programs, you can run into trouble. Go to start > all programs, highlight LW & choose the uninstall option from there. If you've used the add/remove programs method, try reinstalling LW & then uninstall it the right way

http://www.limewire.com/english/content/download.shtml