Shark or JB, as I dont have the full version of SS:SE, only the demo, I cannot verify this. Someone at Rage3d is suggesting that that issue iro angled surfaces on the 8500 has been fixed.
yeah sorry about that. Flexy (dont know his credentials) said on seeing your pictures posted at Rage3d, that that issue had been fixed. As the new drivers fixed a few things (e.g. those openGL extensions in win9x that stopped Humus's demo's running), I there may be some truth in the statement.