Hi Grizloc,
I still use the phone w/o any problems with the camera. Interestingly, I started to notice the sound after I have used a barcod program as well. However, I don't think that this program caused physically damage on the lens. It seems very unlikely. I believe when I started to use barcod program the environmental noise was very low therefore I noticed this sound.
If more users share their experience (whether they hear this sound or not) than we will know better, but for the time being I don't think it is a problem.