QUOTE(escrapment @ May 25 2006, 05:07 PM)
No problem.
Just a slight correction to what I said above: after checking it again, I've found that the doors typically go nowhere; if you get up close and examine them, they'll simply say "door;" unlocking them and attempting to open them will result in nothing happening.
What's happening here is that these doors are effectively "one-way;" They have a door-marker in front of them, that tells the game where the player/NPCs appear after passing through ANOTHER door, but the door you see does nothing.