I am helping out at a school with about 30 ipads. We have let them sit all summer and they have a lot of app store updates, however, when we try to update them by clicking update all they just sit there. We let them sit all night and the loading bars on theapps havn't moved at all! What can we do? We need theese iPads for our lessons and half the apps are unusable because they are stuck in a loading state. Please help.... Think of the childeren!