I've played Civ4 a lot on this particular computer (Lenovo T61) but I just installed Windows 7 x64 recently. Now whenever I play (multiplayer is all I play), periodically the game will freeze for a good 30 secs - 1 minute, and then return to normal. It's getting pretty normal. I ran dxdiag and everything said it was fine. Has anyone else had this problem or know of a solution? 
