Sorry for departuring in such a hasty way, my Internet Service Provider decided to start "fixing" their DNS-servers or something, and now many things in the net are not working, or working only in bursts.
I can get out fine enough from there by myself, no need to worry about that. I managed to log in after a long wait (only to disconnect again), and noticed I was at a safe area. Luckily the wizards' teleportation isn't considered a spell by NWN, so I can just hop myself out whenever I want to.
