using airplay from ios6 to appleTV

Hi

I am trying out AirPlay on io6 and appleTV with latest update.

AppleTV is setup to propose a code on the screen.

When I start a movie, or some music, I can see ios6 trying to present a login screen (the volume slide swings back and forth once) but the login screen never appears.

AppleTV obviously present the login code.

Anyone seen this buggy behaviour ?

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Forgot to mention...

Iphoto works fine

whilst iTunes and movies does not.

bump