Iphone 4 Front Facing Camera Faulty ??

Hi guys


I've got a iphone 4 on ios 5.1 and every time i try and switch to the front facing camera the phone just crashes and I'm unable to switch back to the rear facing camera until i do a full reset.

There are loads of threads out there from people complaining about the problem but they are all old and know solution was found.


Is this a know fault now and is it just a case of replacing the camera?


Thanks ;)