Flipsideview strange behaviour

I am having a strange problem with a simple test app I am writing for iPhone. I have a view with a flip side view. Now suddenly this view has the title two times high. In the IB (I am using xcode 4) this is how it is looking

Pict开发者_StackOverflow中文版ure of the IB

In the end I get a two times higher title bar. Anyone ideas?

Thanks in advance, Umberto

---

The navigation item seems to have its prompt set. You will have to set it to nil.

self.navigationItem.prompt = nil; 

or if you've access to the navigation bar,

navigationBar.navigationItem.prompt = nil;