I connected a powered D-Link USB hub to the USB port on my Airport Extreme. The Seagate Free Agent Drive I plan to use for backups is connected through the hub. When starting up, I get an error message from the Airport Utility that there is a disk error. Moreover, my iPhone isn't recognized by iTunes, and a couple of other USB devices don't seem to be working. Can this setup work, and if so, is the problem my hub? If not, I assume the disk can attach to the Airport Extreme, but the hub has to go right into the Mac. I just got the Mac, so I am trying to work out all of the kinks.