I have problems with this behaviour, too: Just did a clean Cacko Lite 1.22a installation to get rid of the problem, but now it's there again: If I try to start the menu by tapping the QT button it fails in most cases, I have to tap a second time! And it's not only the QT button, it's the same with tapping the applet icons. And I can hear the tapping beep, so the software recognizes the tap, just doesn't react.
If nobody else experiences this I probably have to check this with every software package I install (I should have done that anyway, I know...).
Best,
Carsten