After upgrade to Ice Cream Sandwich my Samsung Galaxy S2 camera cannot focus

After upgrading to new Android version (Ice Cream Sandwich) my camera cannot focus. All the pictures made by my phone are blurry (not focused). I tried to reset camera settings to default, I tried clearing apps data (of my camera), I installed another camera application - nothing helped. Interesting is, that the camera can focus on objects, that are relatively close (50 cm) but object that are further are blurry. My front-camera works fine (the one on the display side) Any ideas? Thanks