IOS 5 YouTube App Issue

i have iphone 4s, running ios 5. when try use youtube app , sign in, seems reject try.

if go safari, , go youtube.com , login, well.

there odd frestanding youtube app? i've tried both screen name , full e-mail address nothing seems accepted.

ideas?

 

no more google in bookmarks in 5.1. no more youtube sign ins.
google dead in apple's eyes.

 

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