I'm using OS X (Jaguar) same problem as well. I downloaded it the first time and it ran no problem but after that it has been acting up with the split second connection. Also almost every time I open LimeWire the connection wizard thing opens and I have to reenter those preferences... any ideas on how to fix this? Also how can a Mac user tell if the networking isn't allowing gnutella connections? Thanks a lot and best of luck to everyone.