If a simple list box demand cutting edge CPU and graphics card performance in order to display smoothly, then something has gone very, very wrong in the design process. I yesterday tried out "Avalon patient monitor"-application on wpf.netfx3.com, and I was really surprised at how even just moving the application window was slow, and the animations in the listview were just a joke - to me, the performance was totally unacceptable, and it barely even contained any data. I was under the impression that WPF would be something to look forward to... What a different between all the marketing hype on WPF and reality...