Had to host the debug.err on rapidshare; pastebin rejected it as being too large. 
http://rapidshare.com/files/400300819/debug.err.html
Now, I'm not 100% sure how useful that file will be. This one is from a game where it just froze seemingly inexplicably. No hdd thrashing, no nothing, just no responce from it. Could click over to other monitor and do things there np, but even then game wouldn't minimise itself even though it's in fullscreen mode!
Taskmanager was able to terminate it OK.
This is the first time I've had the freeze issue though; typically it CTD after a certain action (varies what action, but nearly always after something) this time to the best of my knowledge it was mid move. I was ABOUT to setup a second city, but it froze before I was able to do so.