Try completely uninstalling Limewire...move the Limewire folder to the trash and the Preferences folder as well. ~note this will remove all LM files including preferences...if you have special settings i.e. port settings, etc make sure you remember what they are~ this will not remove files you've downloaded unless you have them saved there.

Once you've done so repair permissions on your hard drive (simply a precausion)...then reinstall LM 2.3.8 AND repair permissions again.