This is the overall problem with Vista. It is inconsistent, in part, due to driver instabilities. NVidia drivers are terrible under Vista. ATI actually has the upper hand there.
And Sniv, the problems you faced with Vista and various products is all about Vista and DRM. You older version of Pinnacle will not work due to DRM under Vista. Creative Labs had to re-create the DirectSound API under Vista, as MS pulled it out becuase they could not figure out how to make it work with DRM.
Basically Sniv, everything you listed as being a problem with a third party is all related to DRM under Vista.
Today, Vista decided to not show me any of the computers in its workgroup. No way to force it either. It will not show itself in the workgroup. I am now relegated to using another computer to purchase anything at Newegg, as my Vista box refuses to work with thier secure pages after the last update. The more updates I do, the more problems I am getting.