I have the same vid card 6800 gt x8 agp nvidia card by PNY tech running off a 600 watt PS by tech toys, P4 3.0 gig,,,, 2 gig ram,, SB aud. MSI mb
I have the EXACT same problem you stated, the graphic artifacts all over, the slow down, then freeze, then lock up , I cant even con-alt-del , must manual shut down.
I dont know about you but my days of buying computor games are comming to an end. It seems lately that every game I buy is just not ready for stores, and I'm talking every game I have bought in the last 6 months...to name a few...
WoW online,,, Dungon lords,,, Axis & Allies, AoE 3 (ctd alot but was playable),, Quake 4 (ctd alot but playable but still very annoying) and now this game Civ 4 ( Btw this was my 1st civ game ,,, and my last!!)
I'm gonna buy a consol game system and be done with it, I'm not a computor techy so I don't WANT TO FIND THE FIX TO THE PROBLEM thats why I pay 40-60 $ for your games. If I wanted to learn Comp science I'd go to college.
I want to spend the time I DO have PLAYING the game not being your ghost beta tester, its time we sent these companys a message and just boycott all their games till they realize were not joking around, but thats just wishful thinking.
Sorry didnt mean to rant on your post but I'm kinda fed up.
I spend more time on forums trying to find a solution for these borked games than playing and sifting thou all these posts to get actual info is mind numbing,, (opens up window and lets out a blood curling scream..closes window) ,,, I feel much better now,,, later guys and GL fixing your problem , I'll be lurking as usual hoping for the best.