iTunes ask me to restore from a old backup all the time when I connect my iPhone5.

Hi! My iTunes ask me to restore from a backup when I connect my new iPhone 5. I have done the backup process but it still ask me to do it. How do I get iTunes to understand that this is done?

I connected my iPhone and restore it from a backup from my old iPhone 4. It worked well. But when i connect the iPhone to iTunes it ask all the time the same thing.

1. this is a new iPhone bla bla or...

2. restore from a old copy. (strange is that it says that this was done 1982 all the time?!?!).

The MacBook Pro is new and I have the latest iTunes 11.0.1. (12)

Glad for any help!!

Best regards

Pontus