See also: http://dl.dropbox.com/u/9163928/August%2026/Elemental1_05-2010-08-26T21-42-22-503.dmp
And: http://dl.dropbox.com/u/9163928/August%2026/debug.err
I had a fairly large civ, tried to save, nothing happened. When I alt-tabbed out, I had several out of memory popups. While trying to click on them to close them, CTD.