Sure, look around the forum first before posting. You are an experienced forum member, you should know by now there are not only posts but also sections in the forum dealing with this issue. Connection Problems

I never have problems connecting with an old LW 4 version if I use the connection fix installer. I also check to make sure the program is not being firewalled either in the firewall or via the router. Depending on your type of router you might need to setup a TCP & UDP port forwarding rule for LimeWire. You can do the same for FrostWire but just be careful to use a separate port forwarding rule & different port number. Two programs cannot use the same port with port forwarding. Also two computers on same local home network cannot use the same port forward rule. Recommended to use a port number between 20000 and 60000. Also of course set the port forward option within LimeWire and add the port number in LW's connection settings.

You have a history of asking the exact same question, an example http://www.gnutellaforums.com/mac/29...tml#post377543. Perhaps you can bookmark the post that best answers your question.
You also have a history of posting to very old threads.