Quote Originally Posted by patricks View Post
Well I would try to post a portion of the file, but as soon as I copy/paste a few walls to a blank file, it behaves correctly.
You can try the copy and paste trick inot the original file to try and fix the issue. Just cut the walls out of the project and thne paste them back to the original position. I have seen stuff like this where the cuttting and pasting action kind of "re-registeres" the objects inot the database so to speak and the problem resolves.

MIght be worth a try.