go to the market and download the app called Spare Parts. Open it, and scroll down to where it says Compaitbility Mode. Then i think it comes checked off by default, so uncheck it, check it agian, uncheck it again and reboot. Now all apps should show full screen. Had to be done on the Galaxy Tab too. It will scale all apps to full screen, but be wary that some apps are meant for tiny screens and look very pixelated stretched super large