leo, this thread is almost a year and a half old!

Anyway, sounds like something with the system updates broke your connections, so just do a "safe boot" (restarting and holding down the shift key after the start-up sound) and a Disk Utility "Repair Permissions".

Do a regular restart, and that should get your system back up to snuff. Check the OSX firewall (System Preferences>Sharing) to see that it is allowing port 6346, and if necessary, use the LimeWire Preferences "revert to default button."

See if that works, and if not, post back.

cheers