I confirm I was having this same issue, but with different headset. It was happening with a USB Plantronics Blackwire C610.
I'm on Linux Mint 13 Cinnamon. After updating package xserver-xorg-input-evdev the problem was fixed.
I confirm I was having this same issue, but with different headset. It was happening with a USB Plantronics Blackwire C610.
I'm on Linux Mint 13 Cinnamon. After updating package xserver- xorg-input- evdev the problem was fixed.