I just saw a very peculiar thing in my log which I don't know how to interpret:
I don't recognize either of the IP addresses. Currently, only 8 people know about my server, and neither of them use any of these IP addresses. What does it mean, and how concerned should I be? To be on the safe side, I've switched off (F4) my HFS server until I've figured out what just happened.
I'm using 2.3 beta, build 202.
[edit] By the way, I have the "Stop spiders" option checked as well.