I'm having this problem too!
Also, does anyone have problems where everything works fine but when you use 6 or 7 players on a LAN occasionally you'll lose connection with someone? Normally our 7 or 8 players are 4 people and 2 or 3 AI. It seems that it crashes when ALOT of units are being moved at the same time (e.g. several of us attacking an AI player at the same time)