User blog:SpetSnAZ CM/WaW; BW INTERTIAL FAILURE

okay when i play zombies or campaign on WaW, sometimes i get kicked off and it says BW_(then something i dont remember)_INTERTIAL_FAILURE. Is something wrong with my disk or is this a glitch with Treyarch? i was playing my favorite WaW campaign level, Eviction, and i randomly got kicked out....what do i do? a solution OTHER than buying a new disk? Im not paying another $40....