the problem is only present in certain 3d engines, so it will only effect certain implementations of the shader.
i used the term 'cascade effect' to illustrate the fact that once the problem occurs, it will only get worse and can only be fixed by a reboot.
an example of this effect in asheron's call 2 on an ac2 forum: http://188.8.131.52/search?q=cache:B...C2&hl=en]forum
i have read that the 6800 will display the same corruption, unless pixel shaders are turned off, but i don't have the link for that. try searching on google