Show Hide Desktop 1.0 is a joke to annoy people on whose system you install it, as all elements on the desktop (icons, files etc) continuously appear and disappear every few minutes, ending up completely empty and useless one minute and then suddenly everything is back to normal. Then later it happens again, and again, and again...
To disactivate it you only have to move the mouse cursor to the top left corner and leave it there a few seconds