I apparently have the same problem. I have a CNet CBD-120 Bluetooth V2.0 USB Adapter. My syslog and kern.log is flooded with this type of messages:
Jul 2 07:39:13 mirshafie kernel: [144467.293717] usb 7-4: clear tt 1 (9282) error -71 -- syslog is flooded with messages after connecting bluetooth usb dongle https://bugs.launchpad.net/bugs/39414 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs