We have uploaded a new Quantal linux kernel. Please note the ABI Bump. The most notable changes are as follows:

* Rebase to upstream v3.5-rc7
* Bluetooth: btusb: Add vendor specific ID (0a5c:21f4) BCM20702A0 (LP: #1010281)
* Misc config updates

The full changelog can be seen at:

https://launchpad.net/ubuntu/+source/linux/3.5.0-5.5