On my dell studio xps 13 with Windows 7 Build 7100 installed, my computer frequently minimizes out of full screen games spontaneously. For example, when I'm playing Battlefield 2142 or Halo 2, I start up the game, within a few seconds, the game will become minimized without me pressing alt+tab. I have also noticed that when I have a window open it will sometimes switch from an active window to an inactive window and then back again after a second or two. This only happens on my laptop and not on my desktop. It makes it impossible to play any kind of full screen game.