This certainly took a while to reach the grapevine, but apparently a splitscreen Horde Mode game using two profiles, which is to say almost all of them, is causing certain Xbox units to go all nothankyou.jpg on their loving owners. More specifically, just those who want to stomp Locust pancreases into liquid with a friend in Gears of War 3, but still. You tolerate one uppity Xbox, they all get ideas.
Epic, for its part, seems to be attacking the problem with aplomb. “Getting this resolved is a priority for Epic. We are collecting information internally, sourcing as much as possible from the community and exploring potential fixes. We do not have any recommendations to share with players just yet.” We do – maybe try solo Locust stomping for a while.