I have a Windows 7 machine with iTunes 10.1. I am trying to restore my iPad after the update to OS 4.2 left it at the apple loading screen for hours without progress. I'm getting the following error: iTunes could not restore the iPad because the backup session failed. I have tried older backups and none of them work. I can't imagine all my backups are bad and I don't ever recall seeing an error message about it. Any help you can provide would be appreciated. Thanks!