I updated the driver, didn't fix the problem. I downloaded the patch ... and it tells me my system is below minimum specs ... but my Presario exceeds recommended requirements stated on the box and in the manual. And then tech support and entries on this forum tell me I need to get a new high end machine, and "suggest" I use it only for Civ4 ... which to me means that a $50 game now becomes an $850 game. While the game is buggy, the developers probably did as best they could, but I'd really like to meet the architects and designers face to face and see if they can explain the stupid decisions they made.