UINavigationBar "jumping" into postion on startup

[EAGLE]

Hi all,

i have a question concerning the UINavigationBar that i couldn't solve yet. After my application launches i have the problem that on the first screen my NavigationBar is "jumping" into position, which means it starts about 50 pixels too low on the screen and then jumps to the top.

On every other screen it is at the top from the beginning. And when i return to the mainView it is still at the top. I searched all the forums and google for a solution but couldn't find any.

I would be glad if any of you has a solution to this little problem

Thx, EAGLE