I think I just solved it. Tried everything in the posted list. (If LW will not connect).

Replacing the gnuetella.net file did the trick. I noticed that the old file's size was 0kb. Probably a good indication that it is no good. The new one has 21kb as I recall.

I think the lesson here is, not to put too much emphasis on the "wall" icon. Or at least try the other remedies listed before you start messing with firewall settings or router settings that could really mess up your system.