No connection
 

I was downloading for a couple of weeks when the program suggested I upgrade. Since then, I haven't been able to connect. My internet connection works fine. This is an iMac running 9.0.4. The Lime Wire window header says, "Disconnected, no files available". The sharing light is red. When I select connect from the file menu it flashes green for a moment. I am connected on a network. What can I do?
Incidently, at home, I am using a G4 iMac on a phone line internet connection. Lime Wire works fine (albeit slowly).
mark lund