It seems that Dell's investment to Ubuntu went further than they ever let anyone know. They actually made a pretty decent commercial for Ubuntu on Dell laptops. Check out the video below. The strangest part is that I've never seen it, and no one I know has seen it. It's almost as if they made a commercial, but then decided not to market Ubuntu on Dell. The simplest explanation is that Microsoft blocked them from marketing Ubuntu, as Microsoft has done time and time again with Dell, as well as all of the major manufacturers.