I called HTC to report muffled voice. The rep told me she couldn't hear me, so she experienced the problem everyone else had complained about. As I was talking to her, I decided remove my case - it's a Case-mate that I bought at AT&T. Then she said "I don't know what you just did but I can hear you clearly now." They recommended buying a case from shopamerica.htc.com (which has nothing on the Titan) or any of these - daydeal.com, letstalk.com, boxwave.com. Pretty lame. I love my case-mate. I guess AT&T needs to be made aware of this - the Titan isn't compatible with their case. I guess this is their version of antenna-gate.