I use 64bit Windows 7 with ServicePack 1.
(Rest of my spec: Intel C2D E8500, Gigabyte GA-X48-DS5, Galaxy GeForce GTX285, 4GB RAM (2+2 in DC), X-Fi Xtreme Audio, Saitek X52, TrackIR4, Logitech G25 Wheel)
I use nVidia drivers 197.45 - they are little old but the most stable for my aged graphic card.
Yes. Ofcourse EtherealN. I did obviously everything what Wags wrote to do when problems appear.
I have two more friends of mine from polish forum with same issue:
http://92.60.132.84/~apacz/smf/index.php/topic,14188.0.html
I'll ask them too what system they have and will report back.
I did the same. I tried CLEAN full install twice but without luck.