Hello!
I would try resetting the smart hub!
Here's an article to walk you through those steps, if needed: http://support-us.samsung.com/cyber/popup/iframe/pop_troubleshooting_fr.jsp?idx=536483&modelname=UN50H6400AF&modelcode=UN50H6400AFXZA
Regards,
HD Tech
my samsung 48" H6400 is only showing 2 dedicated pages (Apps & network/connectivity).
It is not displaying other pages i.e. dedicated pages for 'On TV', 'Games', 'Film & TV Recommendations'.
Can someone tell why is that?
secondly, i don't see youtube app or icon on smart hub to download from. why is that? is it possible to download it somehow?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic