So I tried to back up my iPad yesterday in anticipation of transitioning from iOS 4.3.1 (IIRC) to 4.3.3 It wasn't finished by the time I had to leave work, so I left it plugged in and went home. Imagine my surprise when I arrived at work this morning to find... it was still syncing! I can't click on the little "circled x" button in iTunes, and the status is "Syncing [iPad name] (Step 5 of 5)" -- it is still "Determining tracks to sync" (which is exactly where it was when I left it yesterday afternoon. It does say "Sync In Progress" at the top of the iPad screen, but the "Slide To Cancel" slider switch at the bottom won't work (the touch screen itself seems to be completely unresponsive). And I don't know if this helps any, but in the top-right of the screen, where the battery/charging icon is located, it says "Not Charging." Any assistance would be greatly appreciated. The most relevant thread I could find was this one: "2nd gen iPod touch stuck - please help!"