I just bought a new iPod (60GB) and plugged it into my iMac, which runs OS 10.3.9. The iPod just flashes a red circle with a diagonal slash through it and says "Do Not Disconnect." Meanwhile, iTunes does not indicate that anything is happening. There is no flashing orange light on my iTunes shuffle, which, I'm told, indicates things are working. There is absolutely no indication that anything is happening. What's up? Thanks.