I actually retract my statement. In some ways, It is better to leave Tor running in a remote location. It is better to leave it running because if there are not breaks of ~24 hours between Tor sessions, Tor can bootstrap at directory mirrors (of which there are hundreds) instead of directory authority servers (of which there are eight or so). This is good for membership concealment / usage concealment against an attacker who monitors the directory authority nodes. However if you leave Tor running when you are not using your computer it is a huge indication that you are not properly utilizing FDE. Your computer is vulnerable when it is booted up. So I guess the best answer is probably that you should use Tor enough so that it doesn't need to bootstrap at directory authority servers (your Tor client gets a list of directory mirrors from the directory authority servers the first time it bootstraps, but the Tor client considers the list stale after some fairly short period of time, I think 24 hours or so), but you shouldn't leave Tor running when you are not using it. Or you could just use a bridge and use Tor as much or as little as you want. Of course if you use TBB you also directly connect to directory authority servers every time you upgrade. The same may be true for the regular Tor client itself, I am not sure. Also you need to keep in mind that simply by monitoring the Tor download site an attacker can quickly get a list of all IP addresses that have downloaded Tor. Hopefully they are not doing this, with you being the only one who downloaded Tor in the remote location that you ship drugs from.