Upgraded from Karmic to Lucid and MX5500 stopped working :(
$ lsusb
Bus 006 Device 009: ID 046d:c709 Logitech, Inc. BT Mini-Receiver (HCI mode)
Bus 006 Device 008: ID 046d:c71c Logitech, Inc.
Bus 006 Device 007: ID 046d:c71b Logitech, Inc.
Bus 006 Device 006: ID 046d:0b06 Logitech, Inc.
Upgraded from Karmic to Lucid and MX5500 stopped working :(
$ lsusb
Bus 006 Device 009: ID 046d:c709 Logitech, Inc. BT Mini-Receiver (HCI mode)
Bus 006 Device 008: ID 046d:c71c Logitech, Inc.
Bus 006 Device 007: ID 046d:c71b Logitech, Inc.
Bus 006 Device 006: ID 046d:0b06 Logitech, Inc.
$ hcitool dev
Devices:
hci0 00:07:61:DF:81:D7