Hello folks Since nobody really seems to feel the speedup that comes with Q2DX enabled, I decided to test some apps if they do use Hardware Acceleration or Q2DX using the Quartz Debug Tool with Flash Screen updates option. Here some results: Finder doesn't Safari does (page rendering) VLC player does Mail does iTunes doesn't Quicktime doesn't Preview does GraphicConverter 4.8 for window edges Stickies does XCode does Camino 9a doesn't However, I might be wrong but most GUI Components (Scrollbars etc. DON'T??? The best difference can be seen in the Demo Apps in the developers folder, if you switch between hardware and software acceleration. What are your experiences? Im still a little bit disappointed if I think Safari might not go faster even with Q2DX enabled.