Version: (using KDE 4.2.0) Installed from: Unlisted Binary Package When I choose the presentation mode, the mouse pointer doesn't disappear. I first have to navigate to the next/previous page or make the topbar visible (with moving the mouse to the top). If I press any key the mouse pointer also disappears, but after moving the mouse (which reveals the mouse pointer) the pointer doesn't disappear again. I always have this behavior if I select the presentation mode. It never reappeared within a presentation, only at the beginning.
This should be fixed in Okular that will ship with KDE 4.5, if you still have the problem, please reopen this bug. Thanks for using Okular