Rotation behaving differently on iOS6

Question

I did an App which is tab-based. Nothing needs to be on landscape mode but a couple of views. It worked OK on iOS5 and I was pretty happy with the result. However with iOS6

Answer 1

You might double check Support Interface Orientations

On previous version, it means nothing, but affects whole application now.

Note: The 'upside down' option doesn't work even enabled or disabled on iOS 6.