Did I have a conversation with the AI?!?

[rainingblood]

if you don't want anyone to join a multiplayer game (which would be quite strange :p) you will be able to put a password on your server, thus preventing other players than AI to play with you

But yeah, single player is single player...

[St!gar]

I really hope that gets fixed in a patch.

[Phelanpt]

If you look at the bugs forum you can see it's already on their plans for the patch.