After taking 2 hours I finally got my iPAD (1) updated. The first thing I noticed was that my iPAD seemed sluggish. When I tap the "HOME" button or tap an app icon it seems to take about 1/2 second to see the app or for the lock screen to show up. I may try a clean install tonight to see if that helps. BTW I also see the same thing on my iPHONE 4 but maybe to a lesser extent.