cryptsetup: evms_activate is not available
Fully encrypt system, with raid0 on 2 drives. Upgraded to beta 12.04 from update-manager -d, failed to boot. Verified that the kernel had correct crypted drive UUID's in conf.d by comparing to a back up of the boot partition from before the upgrade. Temporarily fixed by copying the initrd.
The above is pretty much the limit of my technical knowledge, so if you want further information please let me know what to run to get it for you.