Every time I run pam-auth-update (no matter what the options, and even if I cancel the debconf prompt), it duplicates the pam_smbpass and pam_ecryptfs items in the Additional block in /etc/pam.d/common-*, although not the pam_unix item.
$ sudo DEBCONF_DEBUG=developer /usr/sbin/pam-auth-update
debconf (developer): frontend started
debconf (developer): Trying to find a templates file..
debconf (developer): Trying /usr/sbin/pam-auth-update.templates
debconf (developer): Trying /usr/share/debconf/templates/pam-auth-update.templates
debconf (developer): Couldn't find a templates file.
debconf (developer): frontend running, package name is
debconf (developer): starting /usr/sbin/pam-auth-update
debconf (developer): <-- VERSION 2.0
debconf (developer): --> 0 2.0
debconf (developer): <-- CAPB backup
debconf (developer): --> 0 multiselect escape backup
debconf (developer): <-- X_LOADTEMPLATEFILE /var/lib/dpkg/info/libpam-runtime.templates libpam-runtime
debconf (developer): --> 0
debconf (developer): <-- SUBST libpam-runtime/profiles profile_names unix, smbpasswd-migrate, ecryptfs-utils
debconf (developer): --> 0
debconf (developer): <-- SUBST libpam-runtime/profiles profiles Unix authentication, SMB password synchronization, eCryptfs Key/Mount Management
debconf (developer): --> 0
debconf (developer): <-- FSET libpam-runtime/profiles seen false
debconf (developer): --> 0 false
debconf (developer): <-- SET libpam-runtime/profiles unix, smbpasswd-migrate, ecryptfs-utils, smbpasswd-migrate, ecryptfs-utils
debconf (developer): --> 0 value set
debconf (developer): <-- INPUT high libpam-runtime/profiles
debconf (developer): --> 0 question will be asked
debconf (developer): <-- GO
debconf (developer): --> 30 backup
debconf (developer): <-- GET libpam-runtime/profiles
debconf (developer): --> 0 unix, smbpasswd-migrate, ecryptfs-utils, smbpasswd-migrate, ecryptfs-utils
debconf (developer): <-- FSET libpam-runtime/profiles seen false
debconf (developer): --> 0 false
debconf (developer): <-- SET libpam-runtime/profiles unix, smbpasswd-migrate, ecryptfs-utils, smbpasswd-migrate, ecryptfs-utils
debconf (developer): --> 0 value set
debconf (developer): <-- FSET libpam-runtime/override seen false
debconf (developer): --> 0 false
debconf (developer): <-- SET libpam-runtime/override false
debconf (developer): --> 0 value set
I'm attaching a tarball containing /etc/pam.d/common-* (before this breakage), /usr/share/pam-configs/, and /var/lib/pam/.
I think this is critical because when those items are duplicated it renders me unable to log in (gnome-screensaver apparently hung, and login segfaulted; I had to reboot).