Read here >

http://www.limewire.com/english/content/firewalls.shtml

down in the lower part...

And, note the
Add

javaw.exe

If that helps, please return and let us know, OK ?

Also, I would definitely not recommend having any p2p client configured so that it launches on start-up...
Always better to wait until other apps have 'cleared' and your connection is stable and 'available'.