Can't narrow this one down to a cause yet. I've had it hang one and crash to desktop once, while moving on the map. Did not experience this problem with 2A.
Debug.err: http://dl.dropbox.com/u/8518716/debug.err
Dump log: http://dl.dropbox.com/u/8518716/Elemental0_804-2010-06-27T10-18-52-41.dmp