Re:It's Windows 7, and yet, the build number is 6. (Score 2, Informative)

I read that the speed of Windows 7 is a result of some under the hood programming. They implemented concurrency in the drawing component of GDI, which in theory allows for smoother graphics when multiple GDI apps are running. The old way of doing things was a single lock, and the time it took to lock/unlock is what seems to have caused past responsiveness issues.