Releases before 3.0.2 requested an accumulation buffer (OpenGL feature) in the "wrong" way, which made some ATI cards report that no accumulation buffer was available (so HQ motion blur was disabled).
3.0.2 fixed this, so those ATI cards now have HQ motion blur available.
In 3.0.3 (coming soon) we've added a preference to the OpenGL page that allows people like you to turn off the request for an accumulation buffer (so you won't have to edit the Registry anymore).
Alan.
http://www.wondertouch.com
