I did the debugging instructions after an update. At best, automounting encrypted partitions work inconsistently, sometimes they mount and sometimes not.
Here are the logs when it did not mount. Additionally, after successfully entering the passphrase, the encrypted partition was opened and was mapped to /dev/mapper/luks_crypto_e9c25c4a-3fff-464b-b3a0-ae5c289da5fd I hope this helps. ** Attachment added: "Debug information files" http://librarian.launchpad.net/6564941/debug.zip -- Feisty Herd 4 does not mount encrypted partition https://launchpad.net/bugs/88213 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs