I'm running into the same issues as described above - Limewire 1.9 on Mac OS 9.02 was moving files like a dream this AM, and since this evening, the Connect button has gone unresponsive - nothing changed on my system of its configurations. There is nothing going on in the connection dialouges. I've run through all in the suggestions in the FAQ's - even tried running the thing with the Contextual Menu extension ON rather than the usual OFF, and no response either way.

At least two friends in the area on similar Mac set ups are seeing the same problem.