AT&T has called this a "Priority 1" problem and is being actively DIAGNOSED by AT&T repair teams. That means they don't even know what is causing the problem. The agent stated that the towers were not physically damaged by any storms because they all still have power, however for some reason the towers are just not working. It is curious that the iPhone 4 was released yesterday, and today AT&T, at least in the major parts of Virginia, has crashed. As of 9:40am they have no estimated time when the network will be back up. AT&T strikes again.