maybe you suffer under this:
http://www.blackberryforums.com/gene...-playbook.html
problem ?
in the BT settings of the PB, delete the Blackberry phone,
in the Bridge settings of the BB, delete the PB
make a battery pull on the Blackberry
Again mate the PB and the BB with the pairing assistant of the PB.
works for me, everytime I am hit with this bug. sometimes it takes days, even a week until this happens, but then it can occur even one time a day.