This is weird. Just started yesterday and now my macbook pro core 2 duo says that I am using a usb 1.1 everytime I plug the ipod nano in the left usb port. When I plug the ipod into right usb port, the ipod is never recognized. It says "do not disconnect" on the ipods screen, however on the desktop, the ipod image does not appear, however it does appear if I plug it in the left usb port. Any idea why this would cause such weird symptoms?