I just received a Samsung Galaxy Tab 2 7.0 (GT-P3113TS) from school and oddly enough after playing with it just for several minutes, it wanted to update the OS. It ended up updating twice (one larger update and then a smaller ~60MB update) to a final version of Android 4.2.2.
Now, after the system starts up I no longer have a navigation bar at the bottom. Once I get into an application or the system settings I simply cannot press any button to get out of it. There is no home or return button or anything like unto that. Am I entirely misunderstanding how Android's UI works or have these updates completely and entirely broke the system such that I'm no longer able to use this device?
As per request, here is a snapshot of my screen: