creaking noise topic

So how many of you hear creaking noise when slightly pushing the Sony logo on the back of the phone? Started recently with me for no reason. Otherwise no issues. I don't know if it's even worth exchanging it and getting one even worse (self cracking, etc)

I've only seen two threads about this issue http://forum.xda-developers.com/xper...sound-t2912920 and http://forum.xda-developers.com/show....php?t=2747319