Have a 5th gen iPod video here on my Mac, formatted for Mac. When I plug it in, it mounts like it should, and I can do everything I need to with it in iTunes, eject it, and use the iPod--the iPod works perfectly fine. But, for some reason on the desktop when it mounts the icon for the iPod has a little red circle with a line through it on the screen. What is causing this? I just reformatted the iPod, and reset it, and reformatted again and still I get the same red circle with a line through it. Software is current. Ideas?