Work has resumed on debugging and preparing AutoMasonry for release after Blender 2.5 comes out. The delay is so I don't have to re-write the GUI for the new API.
I added a few categories to the tracker. You should now be able to post bug reports as well as feature and support requests. I'm still getting used to how SourceForge works, give it a few more weeks and I should be up to speed.
physics simulation is implemented now. There is an option to create each block as a cloned object with physics activated. Fun to play with and a snap to set up cool destruction scenes, like this one right here.
The "Physics Setup" branch has the code, but there is no GUI so you'll have to fiddle with it a bit to customize the wall.
Version 0.1 has been available for a while, but it is now also available for download from SorceForge.