After finishing the demo of the Arx Fatalis and reading the article about it on this server, I have a feeling I need to write down my experience here.
I have GeForce 3 Ti 200 card with drivers version 21.83, Athlon XP 1600+, SB Audigy and 512MB of memory. Opposed to the experience of the reviewer, the game NEVER crashed and I was really experimenting hard with it. I have also never seen any polygon cracks nor any improper display. Maybe it is the matter of the radeon and its drivers. I was playing it with the display resolution 1024x768, 32bit colors and all details on their maximum settings and it was absolutely smooth and fluent.
I have found some bugs too, like throwing a chair against a wall which resulted in the chair being stuck half way into the wall in the middle of the wall or putting a fish over a fireplace just to find that it disappeared and found it just above the fireplace behind the chimney later.
So, that is my bit of experience.

Jan