80% CPU usage on iOS app on seemingly static screen.

Hi there,on one screen I have a text input, a few buttons , 4 low-res thumbnails I have loaded externaly and a few flash button components.

The app is standard 320X480 resolution in GPU mode.

It doesn't use any filters and there is no functions being run via an enterframe event.

So what could my app be doing that's using 80% CPU on this screen ?

I am getting this result via Xcodes Instruments.

On my other screens its using 12-20% when doing nothing. Shouldn't it be using only like..I don't know.. 3% ?

The app is a non-gaming app with a few buttons on screen yet its RAM usage is around 40mb.
Is this okay? What is acceptable for a simple non gaming app ram and CPU wise ?

Thankyou for reading.  If you cant tell whats wrong with my app from this info please also feel free to let me know.