Share your experience!
In camera or through some app?
Have you checked safe mode?
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008
In this case,you might want to try a software repair:
http://www.sonymobile.com/gb/tools/pc-companion/
Keep us updated.
No,only camera features might get updates.