Comment 1 for bug 313330

Finally, I understood what was the problem. Ecryptfs hanged and it didn't crypt my files that were always readable even with an external access (boot from cd). There was a zombie process (ecryptfs-thread) owned by root that caused the message above. I haven't been able to kill this process, so I uninstalled ecryptfs. Problem solved. Now I'm using TrueCrypt.

Sorry for the bothering

David