You must have "Re-Configured" Your Firewall recently ..

Limewire Pro Does Not Usuall have a Problem unless (i) You have reconfigured your firewall, or (2) Changed the Firewall or Proxy Options in the Actual Limewire Pro.

Check Your Firewall (Windowsa) First, if that is OK, then Check the Proxy and Firewall settings under "Option" in Limewire Pro ..

Good Luck ..