After update to ios6 the screen orientation no longer does what you tell it.

Is there a lock symbol at the top of the screen next to the battery indicator ? If there is, then depending on what you've got Settings > General > Use Side Switch To set to (rotation lock or mute notifications), then you can lock/unlock the rotation by the switch on the right hand side of the iPad above the volume switch, or via the taskbar : double-click the home button; slide from the left; and it's the icon far left; press home again to exit the taskbar. The function that isn't on the side switch is set via the taskbar instead : http://support.apple.com/kb/HT4085

If there isn't a lock symbol then try a reset : press and hold both the sleep and home buttons for about 10 to 15 seconds (ignore the red slider), after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.

1. Make sure the Side Switch is set to Lock Rotation: Settings>General>Use side switch to

http://i1224.photobucket.com/albums/ee374/Diavonex/59baf839.jpg

2. Now check the Side Switch to make sure it's in the unlock position

http://i1224.photobucket.com/albums/ee374/Diavonex/6a787edc3564e00c2ca6b70d4f236 e8b.jpg

If the above doesn't work, try this:

Double-click the Home button and swipe Task Bar from left to right; check if rotational lock is enabled on the far left.

http://i1224.photobucket.com/albums/ee374/Diavonex/ba23c598623fe4fd062a40e349af2 18d.jpg