Just installed the update without any problems..However there's an unknown icon up on the notification bar next to the WiFi icon that looks like a white box with a dark "N" kind of graphic which I've never seen before..I have Juice Defender running in the background and the usual apps, am not rooted or have any third party launchers.. anyone know what this icon is? Phone seems to be fine otherwise, though haven't gotten calls.. What was REALLY weird was after the update, my Swiftkey app disappeared, so I had to install it again