In my latest game of Morrowind (and first after getting Vista) I have continually encounterd a frightfully annoying bug. A lot of NPCs start walking into walls, never advancing. This seems to be random. Most of the time, however, at least one will make a straight line right for a door or tight path, and not ever move again. They become walls essentially. And if I reset actors, which I have to do, they immediatly start walking back and blocking the door again. I cant push them out of the way, they dont move...Its astoundingly aggrevating, and it happens a LOT.

Anyone know what I can do to solve this...? If I didnt have the console i wouldve given up after a few days of this.

Although this does happen occasionally when NPCs walk around, you seem to be saying it's a constant bug.
Are these vanilla NPCs, or are they from a mod?
I don't believe this is behavior that would happen unless a mod is affecting them or their Path Grids.