Document permissions not sticking.

I don't want anyone to have access to my documents on the server. I keep setting the permissions to be "no access" for logged in and unauthenticated users. I assume it doesn't include me (as the logged in user). I save the settings, log out and log back in and that permission setting is not staying.

Any ideas. It's really important that I a am able to protect some documents from view except to the person that created them.

I am the admin on our Mountain Lion Server (on a MacMini server).