I saw this thread & totally forgot to get back to it.
1. Try deleting your LW prefs folder whilst LW is closed; found here ->
Macintosh HD/System Folder/Preferences/.limewire
If you arrange your preferences folder in List mode, you will find it at the top.
2. Try out some of the ideas in this post:
http://www.gnutellaforums.com/genera...n-problem.html & also this one
http://www.gnutellaforums.com/273070-post2.html