At https://bugs.launchpad.net/ubuntu/+source/ecryptfs-utils/+bug/1310058/comments/3 is a possible fix for non-working UUID's in crypttab.
At https:/ /bugs.launchpad .net/ubuntu/ +source/ ecryptfs- utils/+ bug/1310058/ comments/ 3 is a possible fix for non-working UUID's in crypttab.