I'm having the same problem with the iPhone, iPad 1, and iPod Touch. It's not busy doing anything as I have left it for several hours and it doesn't make any difference. Sometimes it will attach to the first device and sync OK, then when I plug in the next device, iTunes freezes. Stop it with Task Manager, unplug idevice, restart iTunes, plug idevice back in, good to go again. Sometimes just re-plugging in the idevice will un-freeze iTunes. I have re-installed iTunes. When I have some time, I will delete the devices drivers and re-install them, to see it that helps.