We are investigating the Bluetooth issue.
Can you also please investigate why the headset icon suddenly appeared in the top notifications bar. I have seen this mentioned elsewhere. Headphones have never been plugged into my phone so there was no physical reason for the headset icon to appear. I can confirm that I could not play sound on the phone...ie hearing a music track...because the phone assumed headphones were plugged in.
Obviously this is potentially a major fault as a phone that cannot be heard is a useless phone...I was able to clear it by rebooting, but it appeared randomly from nowhere and that makes it unpredictable.
The phone is running the latest firmware 0829.