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

* Rebase to v3.5 final upstream kernel
* Removal of redundant firmware
* Change default I/O Scheduler from CFQ to Deadline
* Enable CONFIG_EARLY_PRINTK_DBGP=y (LP: #1026761)
* Other misc config changes

The full changelog can be seen at:

https://launchpad.net/ubuntu/+source/linux/3.5.0-6.6