[Pkg-xfce-devel] Bug#731220: lightdm: Uninstall error

[Torquil Macdonald Sørensen]

Package: lightdm
Version: 1.8.5-2
Severity: important

Here is what happened when I tried to uninstall lightdm:

$ The following packages will be REMOVED:
  lightdm*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 1,293 kB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 144249 files and directories currently installed.)
Removing lightdm ...
Purging configuration files for lightdm ...
Removing user `lightdm' ...
Warning: group `lightdm' has no more members.
userdel: user lightdm is currently used by process 3776
/usr/sbin/deluser: `/usr/sbin/userdel lightdm' returned error code 8. Exiting.
dpkg: error processing lightdm (--purge):
 subprocess installed post-removal script returned error exit status 1
Errors were encountered while processing:
 lightdm
E: Sub-process /usr/bin/dpkg returned an error code (1)

Best regards
Torquil Sørensen

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (990, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.11-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lightdm depends on:
ii  adduser                                3.113+nmu3
ii  consolekit                             0.4.6-3+b1
ii  dbus                                   1.6.18-1
ii  debconf [debconf-2.0]                  1.5.52
ii  libc6                                  2.17-97
ii  libgcrypt11                            1.5.3-2
ii  libglib2.0-0                           2.36.4-1
ii  libpam0g                               1.1.3-10
ii  libxcb1                                1.9.1-3.1
ii  libxdmcp6                              1:1.1.1-1
ii  lightdm-gtk-greeter [lightdm-greeter]  1.6.1-4

Versions of packages lightdm recommends:
ii  xserver-xorg  1:7.7+4

Versions of packages lightdm suggests:
ii  accountsservice  0.6.34-2
ii  upower           0.9.23-2+b1