Comment 28 for bug 953875

Thank you tnrng! I'm not currently using encrypted swap, but your workaround may be useful for other people.
I was going to investigate this further, but then I saw the other bug reports (like the one you linked).

For others seeing this issue on 14.04, see: https://bugs.launchpad.net/ubuntu/+source/ecryptfs-utils/+bug/1310058