I've noticed a strange problem with my new iMac. After I use front row, certain keys stop functioning. They are what I guess you could call speciality keys (volume buttons, eject button). This problem is rather annoying and to remedy the problem I must unplug the keyboard. Is this widespread? Would Apple Provide me a new keyboard since the iMac is less than a day old? BTW, the keyboard is plugged into a usb hub, which is powered by the iMac.