Originally Posted by Lord of the Rings

Try changing compatibility mode & setting to run as Admin in points # 5 & 6 : Fixes for Limewire (click on blue link).

If you totally removed LW, cleaned registry, removed preferences folder, replaced old Java versions with a single clean installation again, after cleaning registry, then LW or FW should run ok.

With your software firewall, yes only choose one. You will probably need to remove old firewall exception rules added for LW & re-add them for any different version of LW you install, or FrostWire also.

I don't think LW 4.12 had the firewall blue-world icon, can't remember.
That should not happen. Comcast blocking port 6346? What security software do you have on your computer? Which spyware, anti-adware & malware programs ... and any other security programs do you have on your system? Peerguardian?

Check your firewall security settings to see if port 6346 is blocked for any reason. Tried a different browser to check that test page?

Also, some ISP's give the option to block port ranges outside of the ones a browser normally uses. Check your ISP account online, see if there are any security settings. Check if comcast supplies any anti-spyware or anti-virus or other security or blocking of ports.

Did you install any new programs or do any system updates not long before you started having problems with LW? Did you install alcohol?