I have an external hard drive connected to the airport extreme through a usb connection and wanted to watch a tv show which I have on the external hard drive. As i was watching it, every minute or so it would freeze for a few seconds and then begin playing again. this happened several times. Does anybody know why this is happening?? I have several movies and videos on the hard drive and was hoping that i could watch them wirelessly on my laptop, but it seems as though this will not be possible. Am i doing something wrong?