I replied to your post but it disappeared. lol

Not sure why it's happening. Why not update to LW 4.12.6 see improvements: http://www.limewire.com/english/cont..._history.shtml
It might also be an idea to make sure your Java is up to date & delete your LW prefs folder just in case: delete your LW Preferences folder whilst LW is closed; instructions here: Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)

BTW please don't double-post.