Every time I plug my iPod into the computer a little image of a magnifying glass scanning a hard drive disc (cd looking thing). A blank white bar shows up underneath and SLOWLY fills up. When it's full a little check mark appears next to the disk. Then I hit the center button and it goes to the main screen and acts like it normally should. It's really really pissing me off because if I want to update the smallest thing, it takes half an hour. Any ways to fix this?