I tried several times and every time the effect was the same.
I tried to 'switch' with no applications on the taskbar (apps were minimized on the system tray), Explorer crashes.
I used different key-combos but the problem remains.
In addition, I get 5 'screens' on the switcher, with dupled windows. (ie: If I had Notepad open once its shown 5 times), is this behavior expected or something is not working right?
Sys: Windows XP/SP2, WindowFX 3, NVidia GeForce4 MX 4000, Forceware 81.98
Crash dump available on request