I have my laptop connected to my TV so in order to make it easier for me to read on the screen, I have the fonts set to 150%. This, however causes the taskbar to stay on top of fullscreen applications such as games and flash videos or games that I play through the browser. This happens when I use both Chrome or Firefox. When I play a video using vlc. everything is fine though. If I set the fonts back to 100% or 125%, it will also fix the issue. Also, changing the theme to basic works but I really want to use Aero at 150%.