Bluetooth dropping after update to 10.6.8

The bluetooth connection between my Nokia BH-908 headsets and my mac mini periodically drops after I upgraded to 10.6.8. Restarting blued daemon via Bluetooth Explorer does not fix the problem; I have to reboot the computer to restore the connection. I've tried resetting the System Management Controller (SMC) and I attempted to delete the device and re-pairing it. Neither of those things worked, the headset sill drops periodically. This is what the kernel logs say when the device drops:

Aug  8 07:01:41 kernel[0]: E:[AppleUSBBluetoothHCIController][BulkOutWriteCompleteHandler] ERROR2: 0xe0004006; sizeRem=00000059; isInactive = 0, suspended = 0

Aug  8 07:01:41 kernel[0]: E:[AppleUSBBluetoothHCIController][SendACLData] Bulk out [ACL] data failed. (error = 0xe000404f )

Aug  8 07:01:42: --- last message repeated 20 times ---

Again, this only started happening after I upgraded to 10.6.8. Any suggestions for resolving this issue?