Limewire is being allowed through. I checked the Windows Firewall, and the Exceptions box for Limewire is checked, so it is being allowed through.

I checked the thread you linked to, and while I can find the .limewire folder, the instructions are very confusing, and I can't figure out what to do from there. Do I delete the entire folder, or something inside the folder, or what? A step-by-step guide would be far more helpful than what I'm seeing in the thread you're linking to.