I know this is an old thread but thought I'd post my results since I didn't see one after the last thread on what to do and post back.

I can not connect with my Mac OSX 10.4 LW Pro 4.94 eMac 1.42 Motorola Surfboard modem, max ram, 5 gb hd left, road runner cable, no router, not sharing connection, went to http://www3.limewire.com:6346/ The page should say 'Your test worked!'. I rebuilt permissions (but not in safe mode) a week ago after Safari crash problem and Flash update. No antivirus. New problem experienced user in California.

Downloaded FrostBite, (as suggested here for testing) installed it...went to open it and it wouldnt open
Went to Frostbite Community they said you need JSE 5.0 which I have but in the Utility folder I had to change to preference to JSE 5.0 from Java 1.42*after doing that Frostbite opened with 4 connects.

Went to launch LW and all attempting connections drop after 5 seconds, same thing it was doing for making JSE change.
Tried changing ports nothing. Tried Manual start up nothing. There is a brick wall present behind LW Icon but I've never had a firewall and the one automatic on my eMac has always been disabled...I think cause I've never enabled it...and LW had always worked before and I know I have done anything firewall related since I bought the computer.

I couldn't connect with Drumbeat either, which is why I went to use LW and discovered this problem.....

Any suggestions or advice would be greatly appreciated.

Nas