Hello, For some reason, my airport extreme becomes completely useless when the USB port is occupied. Whether I'm connecting a printer or a external HD, all internet shuts down, and I am not even able to connect to the Extreme via Airport Utility. It pretty much stops wireless broadcast. But when I pull it out, and reset the router without USB, then everything works. Then as soon as soon as I plug in a USB... everything stops. The weird thing is, this thing is only 2 weeks old. But for the first few days, USB worked like a charm. Any idea what happened? Or does this happen to anyone else? Thanks.