The issue could be with your work's set up. Some system admins will block p2p either blocking certain ports or disallowing uncertified softw's or using a p2p blocker. On another note, last I heard there was a bug with UPnP for use on a lan. I'm not sure whether it's been fixed yet. you can test to see whether the port LW uses has been blocked by doing this simple test. Using your browser go here: http://www3.limewire.com:6346/ The page should say ‘Test Page was a Success’. What happens when you go there?