mount -t ecryptfs doesn't work

Executing:

  sudo mount -t ecryptfs /srv /srv

On Jaunty kernel version linux-image-2.6.28-7-server-2.6.28-7.20 resulted in:

Feb 13 00:46:23 crypto mount.ecryptfs: Could not open library handle
Feb 13 00:46:23 crypto mount.ecryptfs: Could not open library handle
Feb 13 00:46:26 crypto mount.ecryptfs: Passphrase key already in keyring
Feb 13 00:46:26 crypto mount.ecryptfs: ecryptfs_add_passphrase_key_to_keyring: Error adding auth tok with sig [616b5c8a415a0000] to the keyring; rc = [1]

Also, using the ecryptfs-setup-private produced:

Feb 13 00:45:21 crypto sudo: Warning: Using default salt value (undefined in ~/.ecryptfsrc)
Feb 13 00:45:22 crypto sudo: Error attempting to open [/home/sommer/.ecryptfs/wrapped-passphrase] for reading
Feb 13 00:45:22 crypto sudo: Error attempting to unwrap passphrase from file [/home/sommer/.ecryptfs/wrapped-passphrase]; rc = [-5]
Feb 13 00:45:22 crypto sudo: Error adding passphrase key token to user session keyring; rc = [-5]
Feb 13 00:45:28 crypto ecryptfs-add-passphrase: Passphrase key already in keyring
Feb 13 00:45:28 crypto ecryptfs-add-passphrase: ecryptfs_add_passphrase_key_to_keyring: Error adding auth tok with sig [616b5c8a415a0000] to the keyring; rc = [1]

Please let me know if you need any more information.

Thanks