Thank you for the answer.
The widgets are unlocked, I've already reached the settings that you describe, but the behaviour that I need to get is to move the mouse fast up and down to trigger the unhiding of the panel by touching the upper side of the screen, then operate on the panel that is, as usual, on the lower side of the screen.
It is something like a "mouse gesture" that I find extremely useful when paired with an high pointer acceleration because I never accidentaly unhide the panel when I work near the lower border.
I think that this behaviour is unachievable with kde4, so I will post my question inside the kde4 forums.
Last edited by cicorino; 04-16-2010 at 04:35 AM.
Reason: changed forum