I use beamer to create presentations. There is an option to create one with notes in a way that the full screen will show the presentation and the other screen (i.e. laptop etc.) will show the presenter's notes. It seems that no pdf reader actually enables me to use this option. instead it shows only the whole wide pdf page in one screen. I attach one small example. https://dl.dropbox.com/u/354653/test.pdf
I found one solution that states I need to close my x session and open only acroread. But I search for something more convenient.