I've done a bit more testing (well, playing games ;) and have found that this problem does *not* occur when using software rendering. kynan - wanna give this a try and see if yous remains stable too? But to confirm my original post, this problem also only occurs in multiplayer games - I've played hours of single-player with D3D rendering. I'm not 100% sure what gfx drivers i'm using - i remember when i first installed it took a few attempts before i got 3d acceleration enabled. what's the best way to find out for sure? Cheers, Andy