hidd bluetooth mouse connection interferes with headset

Binary package hint: bluez-utils

Ubuntu feisty
IBM T60p
Plantronics 520 headset
Logitech M-RBA97 mouse

I downloaded and used gbtsco to connect to the headset <http://www.stgraber.org/category/gbtsco/> however I've seen the same effect with other connection methods (no surprise really)

I can use skype with reasonably good sound quality.

If I do that, and then connect to my BT mouse with

  sudo hidd --connect <btaddr>

and try to use skype again, I get horrible distortion, from "choppy sound" to "white noise"

If I then

  sudo killall /usr/bin/hidd

sound in skype goes back to normal.

Actually I have

  HIDD_ENABLED=1
  HIDD_OPTIONS="--connect 00:07:61:35:FE:A9 --master --server"

in my /etc/default/bluetooth, so all I need to do is turn my mouse *on* to get this effect.