Comment 1 for bug 581303

Seeing this in Maverick too. The attached screenshot shows that you simply need
1- to have an encrypted home directory (done at install time)
2- to check the "Don't ask for password on login" option in the user settings

Symptoms are as described above; ICE Authority errors, Nautilus not having permissions to launch, etc.

Strangely enough, if you switch to a virtual terminal (ctrl+alt+F1) and do a "sudo service gdm restart" and then click your username, it logins properly and decrypts the home directory, allowing GNOME to read your prefs etc. So it seems this happens only on the first login attempt, subsequent logins work.