I had some sticky problems involving lockups and sound distortions. I'm running Vista with nVidia graphics. With the stress of these posts upon updating drivers, I attempted to update my graphics driver- even though it was pretty new- and it was a difficult process- kicked me back to a Microsoft driver that was SUPPOSED TO BE CURRENT. Finally, I got my computer manufacturer's support to install the new Beta driver from nVidia, and, no more lockups or sound distortions.