Bug#643618: gnome-system-tools: "Encrypt home folder..." function unusable

[Paul C. Bryan]

Package: gnome-system-tools
Version: 2.30.2-2
Severity: normal

When libecryptfs0/ecryptfs-utils are installed, users-admin displays a
checkbox when adding a user:

  Encrypt home folder to protect sensitive data

When this checkbox is selected, attempting to add the user results in the
following error dialog:

  The configuration could not be saved
  An unknown error occurred.

The only notable console output that may correlate with this error:

  (users-admin:9021): Liboobs-WARNING **: There was an unknown error
  communicating with the backends: Message did not receive a reply (timeout
  by message bus)

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 3.0.0-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_CA.utf8, LC_CTYPE=en_CA.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gnome-system-tools depends on:
ii  gconf2                 2.32.4-1  
ii  libatk1.0-0            2.0.1-2   
ii  libc6                  2.13-21   
ii  libcairo2              1.10.2-6.1
ii  libdbus-1-3            1.4.16-1  
ii  libfontconfig1         2.8.0-3   
ii  libfreetype6           2.4.6-2   
ii  libgconf2-4            2.32.4-1  
ii  libglib2.0-0           2.28.6-1  
ii  libgtk2.0-0            2.24.6-1  
ii  liboobs-1-4            2.30.1-2  
ii  libpango1.0-0          1.28.4-3  
ii  libpolkit-gobject-1-0  0.102-1   
ii  libpolkit-gtk-1-0      0.102-2   
ii  perl                   5.12.4-4  
ii  policykit-1-gnome      0.102-2   
ii  system-tools-backends  2.10.1-3  

Versions of packages gnome-system-tools recommends:
ii  gnome-control-center  1:2.30.1-3

Versions of packages gnome-system-tools suggests:
pn  ntp  <none>

-- no debconf information