interfering with games

I play some games that take the full screen and change the screen resolution. Fences doesn't like the res change, and displays a pop-up warning and a noise. Sometimes I get only one pop-up that I see when I leave the game. However, sometimes, for reasons I haven't been able to pin-point, not only do I get a bunch of pop-ups, they force me out of the game until I close them. Let me tell you, this is annoying.

I've looked through the settings for something that might control this wa...