Hey I'm also having trouble connecting to limwire.
I'm at school and it just stopped connecting one day. Everyone elses limewire works fine, so it has nothing to do with the school's LAN connection.
I've turned off my firewalls and virus systems, that doesn't work.
I've reinstalled limewire multiple times, and have deleted all existing limewire applications.
And of course I've tried restarting my computer.

Any ideas?

P.S. I have Vista