random game crash

[mahony]

Hi there
I have il2 1946 4.101m and the game crashes sometimes. The picture freezes and there are like small squares on the screen and after a while it goes to black. The sound goes on. I have to hard reset the computer.
I have winXP prof
ATI Radeon HD 4870 (catalist 11.9 - the last one)
Intel Core Due E8400
2GB ram
onboard sound card on Gigabyte EP45-DS3L board

Anyone experiencing the same?? Any solution or advice?

Thanks
Mahony