Anyone else notice connection issues with the headphone jack? If I even touched it while on a call it would cause all types noise and static. I made a Genius Bar appt and the guy agreed and gave me a replacement - which we proceeded to test, same issue. He then pulled out another replacement which then seemed to sound better. So, I took that and left. HOWEVER, I didn't notice until today that the second replacement was actually the older headphones without the volume control... *sigh* So, back to the 'Genius' Bar I go, this time with lockup/crash issues as well.