Hello,
I think there is problem with SpeedButton. If you place this component on Form and build application under Windows and you move your mouse over SpeedButton, it will auto-refresh (it will hide of a few miliseconds and appear again).
Almost the same is happening with GroupBox OnClick.
I recorded this, you can watch it here:
http://www.youtube.com/watch?v=bqqPKxW82XUExcuse me for low quality.