Comment 2 for bug 802197

For others affected by this, here's the mtab line to add:

sysfs /sys sysfs rw,noexec,nosuid,nodev 0 0

And if you had previously logged in as the affected user, you'll now have duplicate files in your home directory (e.g. a normal Pictures folder and the encrypted-filename Pictures folder).

To clean up:
1) Go to /home/.ecryptfs/USER/.Private
2) Move anything not called ECRYPT* to a safe place to get it out of the way
3) Then finally log in as the affected user again