NBC says it's concerned that so many Americans at work streaming the semi-final game between Canada and USA (prelims at 11:30 am, game at noon today) may overload office networks, slowing streams or making it impossible for other work to be done online. An NBC exec says, “If everyone in your building streamed at the same time, you’d have problems.” Click here for the game, and below for The New York Times story about record streaming NBC expects.