Absolutely you want to pause the game when alt-tab occurs. All I was saying was that with BlitzPlus you'll get instant notification via windows events of when someone alt-tabs in and out of your game. So rather than guessing that they've alt-tabbed AFTER 3 seconds, and potentially having Blitz go strange on you (which I've heard of happening on some PCs during Alt-Tab), you can handle it 'properly' in BlitzPlus.