Occasionally, when I pick up an incoming call or place an outgoing call, I hear myself saying "hello" and don't hear anything from the other party. The other parties have told me they are able to hear me (when I subsequently redial them and finally get a good connection). I have to hang up and call the person back, and sometimes it takes a few times for me to be able to get a normal call out without hearing myself. Interestingly, I had this happen more recently on my nexus S 4g before I ditched it a few weeks ago for the Note II. Any ideas on what's causing this? It's really frustrating to answer a call and then have to hang up and redial.