I'd not been able to upgrade to the newer version for weeks, every time I did I couldn't get the software to work at all. I could only use a ripped off version of Limewire Pro which I had to keep re-installing every time after an abortive update. My connection problem has now ceased - I followed the instructions on the LW site to add the Gnuttella address twice into my sharing section (or whatever it is). It had no immediate effect but the following day everything worked perfectly on the latest version (4.9.4). I can now connect with no problems.