Sorry, I should have thought about these suggestions:
The only other options I can think of are proxies which are a tough act to get going properly. See both 1. A Fix for those whose ISP's block Limewire pages 1 - 3 which have links to alternative instructions. Apparently Tor is suppose to be a good proxy if you get lucky with a good one. or 2. Throttled ISP answer? Which has worked well with OOL which has done something similar.

3. Change your listening port to one between 49152 - 65535 thru LW's menu, Tools>Options>Advanced>Firewalls.