If you were seeing the firewall icon, it could've been because of your router but since that's gone now...probably not a problem.

In another thread you said you were having the same problem as someone else, with songs connecting & then showing 'need more sources'. It sounds like fake files to me. Check the link below...it helped the other person
http://www.gnutellaforums.com/showpo...33&postcount=2


To try & improve your connection, you could update your Java, the latest JRE is update 9. See point 1 in the thread below & choose the JRE offline installer. Remove your current Java version before you install the new one.
Fixes for LimeWire