Hello, I downloaded the newest ios 4.2 for my iPod touch, but it seems to stop installing right before it's finished. I can't eject my ipod, because it's installing software. When I close iTunes and turn the power of my Mac off and eject the iPod, it says I have to plug it into iTunes. When I do that, it downloades the software again, and quits right before the end again, not letting me to do anything with my iPod again...