Yesterday when recieving incoming calls, I would be able to talk for about 5 seconds after answering, then the headset icon would appear on the phone, and the phone obviously thought a headset had been plugged in (which of course it hadn't).
I rebooted phone and problem was fixed, but again this afternoon I happened to look at the phone and see the headset icon up again! I rebooted phone again and it went away.
Very annoying since the phone has just come out of warranty. Anyone come across this before?