When editing or scripting I am constantly switching between in-game, in-editor and a variety of other applications. I've encountered an annoying problem with A3 in that attempting to Ctrl+Alt+Del out of the game when it's running in fullscreen via the Task Manager often doesn't work. There is some flickering, a bit of black screen and then we're back in the game again. Repeated attempts - sometimes up to a dozen - are required in order to successfully exit out onto desktop. Granted, editing can be done running in windowed mode, but this was never a problem for me with previous ARMA titles so maybe there's a quick and simple fix?