Not really, you're still using your computer for things that you shouldn't be using it for.

And if you have your own computer then they will soon argue that you used the network in an un-authorised way. So you need a handheld with 3G network, but they'll probably not let that in the door. ;)

I think it's understood that only serious misuse is going to wind up in court. What are they going to do with an encrypted stream?

The fact that you're tunneling into an encrypted stream to a computer offsite is not going to help your case if they find out.

No, seriously. This gets at the whole point of encryption. When this guy went into court, they showed the jury all of this bdsm porno, pictures of the guy naked, showed that he was committing other crimes like solicitation, etc, and that's why he's going to jail. A bunch of random bits don't have the same impact, especially if the defense implies that he was checking up on his ebay auctions.

Exactly right. This was a sex issue, not a computer hacking issue.

The best practice is to conduct your sex life at home instead of the office.

Or at the very least remember to clear your temporary files, cookies, browsing history, passwords, personal files/photos and empty the recycle bin.