If I have the dock showing I can click the bottom right corner of itunes and drag it to fill the screen, the dock just overlaps it. But if I try that with anything else, I can't go past the dock, there's some invisible line. The only way around it is to auto-hide the dock, but the dock is sooooo slow to re-appear.. why does it work in itunes but nothing else? I like to browse online full screen so it would mainly be for chrome.