Wondering if anyone gets a popping sound with these noise cancelling headphones. It is not all the time. Once it starts you can move the left or right earpiece & it will sometimes stop for a period of time. It seems to happen more frequently when you are sitting in the window seat of a plane or train. It also happens when the headphones are 'on' and there is no input from the source, with the headphones unplugged.
I am actually having the same type of problem. Before I though it was just me, but since I saw another user having the same problem, I guess it is really coming from our headphones. I will try to switch to another headphones and see if there's any difference.