Head phone call no longer working?

Back then when I listened to music and had headphones on (without mic) I could answer a call and click "headset" to talk through the phone's mic while listening though the headphones.

When I updated to the new firmware this is no longer possible. Anyone have any ideas?

anyone?!?!?!

this has been an intermittent problem. RIM has switched it around in different OS to where you sometimes have the options. It might not be in this build. i havent checked. Can you go to the menu and do it from there?