visio 2003 - doors don't automatically align to walls   

I've got a set of drawings I've created for our various builds and lately 
I've noticed that the doors don't automatically align to the walls.
Has anyone else experienced this or something similar.
Any suggestions to resolve my problem?

date: Tue, 1 Jul 2008 09:38:02 -0700   author:   automated door alignment - Visio 2003 automated door alignment - Visio