Hi, I've noticed that the audio quality of my headset using snd-bt-sco is very bad. I know that the headset-profile is not intended to reach HIFI sound quality, but in this case the quality is that worse, that I can't use it for telephony. I'm using a Logitech Bluetooth Desktop with the corresponding USB BT-Dongle. My kernel is the latest 2.6.11.6, which also has been patched with patch-2.6.11-mh2. To use the BT-keyboard and the MX900 mouse the hidd server is running. I've added the hidd option "--encrypt", so my keyboard is paired. If I'm not using the HID-devices (KB & mouse) and do a 'hidd --killall', then the sound quality is like expected from a BT-headset. But that workaround is unfortunately not acceptable. ;-) Can anybody tell, what the reason for this problem is and how to solve it? Regards, Stefan