Nothing wrong with my firewall. I'm on a Mac, using OS X's firewall.
It's worked fine as long as i've used LiumeWire & FrostWire. This is a recent problem.
Also, after I am connected and using FW, my connection strength frequently drops down to fair, and then eventually works its way back to good or excellent. then, a while later, it may happen again. I talked to my roommate today and he saays he's had the same problem. So. we may have a problem with our internet service, if no one else is reporting problems. This actually started about the same time we INCREASED our service from 512kbs to 1.5Mbs. Coincidence?