Er... it's telling you to set it as a socks4 proxy, not socks4a or socks5? I think that's... bad? I mean like, that could be a serious leak I think -- somebody else is gonna have to advise you on whether I'm right or not though.So basically, firefox to proxychains, then from there to Tor...? Wait, wtf... that wouldn't help anything? Tor should be listening at 127.0.0.1:9050 if it's setup as usual (the port is randomized in the Tor browser bundle though).