QtMoko: how is long Power key press (=> shutdown/restart menu) handled?

[Neil Jerram]

Sometimes my GTA04 gets into a state where the long Power key press is
no longer recognised.  I've tried to investigate this, but I can't see
anything in the codebase that makes a link between a long Power key
press and showing the shutdown/restart menu.  Does anyone know how that
happens?

(This is running QtMoko git HEAD code, with Qt 4.8, so this problem
might not affect any releases yet.)

Thanks,
        Neil