game crashes

[earcaraxe]

My game crashes regularly, about once in every 3 hours of gameplay. It freezes completely, except that i remain able to move the cursor (but not the map), and the only thing the computer reacts to is a cold reset.
Anyone have an idea how to prevent this? I still like this game very much, but eats into my enthusiasm a bit.

I'm using zonealarm (a firewall i think), but turning it off didnt help (as one of my friends suggested). Perhaps if I turn off ESET smartsecurity's firewall too? Not easy to test this, because of the long and random timeintervals between crashes.

thanks a lot for any help.