When LW is open, click Tools->Options & go to Bug report & click for an example. In the window that appears scroll down to the part that says: "Recieved incoming this session". If it says ‘True’ then LW has no problem with firewalls, but if 'False' it does have a prob.
Remember that after LW opens to give it a few mins to settle down before searching.
Just a suggestion, try out the beta 4.1.7 which is supposed to be easier to connect & search. See here for mofre info:
http://www.gnutellaforums.com/showth...5&pagenumber=1