I recently updated to version 4.3.3 which included some firmware updates. Immediately, the screen was locked in a horizontal position. I finally found out that the update included a screen lock that is accessed with a double bump of the home button.
I may have missed it, but this was never mentioned as one of the changes to expect with the update.
I may have missed it, but this was never mentioned as one of the changes to expect with the update.