This is useful information, which even if you did post before got lost because of various other "contributions". Are we to imply from this that improved drivers exist? If so, how far do these drivers go to fixing the vsync and playback-framedrop problems? From the point of view of a distictly amature graphics programmer, it would be good to know is how available these updated drivers are: can they be/are they ready to be installed by users and application (not OS) developers. And, are they accompanied by headers for us to create our own (?redistributable/oss) software?