No brick wall yet no connection. hmm sounds odd.
Did you try the ConnectFix program? It's usually best to try that 2-3 times.
Keep in mind for Windows 7, you should right-click both Java.exe & LW & run each as Administrator.

How about trying the L.Pirate Edition & see if that connects ok. Another option is to try FrostWire 4 (not version 5), & see if any of those connect.
I'd recommend deleting your LW preferences before installing LPE.
Either of these programs will have a far greater chance of connecting than LW 4, especially any version prior to 4.14.