Yngvi - I had a go with your saved game and it played fine for around 30 turns with zero problems. I met all the leaders and offered them resources etc and I generally just went along with what was recommended to build.
Just a thought...
I Alt-Tabbed the game several times just to note how demanding it was and found it used just short of 1GB of memory.
I can tell with the lag between turns, small on my machine as it is reasonably fast, and the size of the map that you have used, and the fact that the map seems to be fully revealed, that the demands for this game is going to be quite a test with most peoples hardware.
Whether you would prefer to maintain the above playing style or not is your choice but have you considered a small map with only a few Civs just to see if that is any more stable for you..?
It could be that the playability of some games, possibly combined with mods of greater scope and complexity, can be compromised when combined with some peoples hardware.?
Thomas - congrats on the number of downloads and it is commendable of the effort that you are putting in to improve the stability of this mod, I do hope that you can achieve that for those who are having problems whilst maintaining the magnitude and scope of your mod.
Still a good old clean up and scoring your code for gremlins must be a good thing
