It doesn't take more than two minutes to remove a fork (with the wheel) from a bike.

I didn't start this thread because I'm worried about the heavy fork on my commuter bike being stolen. I felt sorry for whoever lost theirs, and it was a reminder as to how secure locks are and aren't. And that was a good time to consider the rest of the security picture.

I'm pretty impressed with tsl's solution, in post #7. If I were worried about my own fork being stolen, I'd go with that. Most people seem to agree that the best call is not to lock your bike in a bad neighborhood. It's still good to be aware, though.