remax: If you have a good working OpenGL driver (and I suppose you do), I'd suggest to use "opengl" for the graphics system. This setting will not be available when I finally switch to Qt 5 (at some point), but it makes a difference for Qt 4.8.x / QtQuick 1.x (desktop OpenGL).

A mind is like a parachute. It doesn't work unless it's open. [Frank Zappa]