skatebiker:

Try a different proxy port. You shouldn't use port 80, since that is the "normal" HTTP port. Use something like 3210 (as in my example), because that is an unused port.

I haven't tried this for many months, but it should still work...

EDIT: Just tested things, still works!

EDIT2: Looks like you just have to hit your "turn proxy on" bookmark to turn the proxy on, rather than load the bookmark and then hit the submit button like you used to have to do.

EDIT3: don't forget to set network.proxy.socks_remote_dns to 1 or true for properly secure browsing...