I have a pearl 8310 and after about 20 minutes of inactivity, the bluetooth disconnects from my headset and disables on the phone, I then have to go in and re-enable it and reconnect the headset. Any suggestions as to what the problem is?

Do you have the Bluetooth connection indicator LED turned off?

I turned off the LED on mine a while back and it caused the same problem. When I turned the LED indicator back on it stopped dropping my Bluetooth connection.

What Naki said. It's a known problem. (known to us here on this site, anyway)