If it won't connect, try deleting the gnutella.net file whilst LW is closed, it must be closed.
Replacing the gnutella.net file in the LW Preferences folder except with LW 5 you do not need to replace the gnutella.net file, simply only delete it. LW 5 upon re-starting will create a fresh healthy one itself. That image is simply to help show where to locate it.