The new mdadm has been uploaded but it will be approved only after knot-3 cd is out. It's a matter of a few hours and it is also a duplicate of 57607.
** Changed in: mdadm (Ubuntu) Status: Confirmed => Fix Released -- LVM/MD root filesystem not found by uuid https://launchpad.net/bugs/54002 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs