Connection refused

I'm getting frequent 504: Connection refused errors on a few sites. This usually happens when I've been logged onto the site for an hour or two. Restarting Firefox doesn't fix the problem, the only thing that seems to work is restarting the Tor and Polipo daemons. Does anyone know what might

[GSoC] Improving Snakes on a Tor

Hi or-talk, My name is John Schanck, I'm a third year CS student at Hampshire College, and I'll be working with Tor this summer through Google Summer of Code. First, let me say how excited I am to have this opportunity - I've been following the Tor project for several years now and can think of no