Norton ? You didn't mention above you had Norton. sighs

(a) Make a note of your settings then: Try deleting your LW Preferences folder whilst LW is closed; instructions here: Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)

(b) Tip: Purge the Downloads Queue! (click on blue link)

(c) Again, disable all your performance options, and OOB searching. Set LW to manually connect via file menu.