Package: x2gobroker-daemon
Version: 0.0.0.5 (compiled from 0.0.0.5 git branch)

$ dpkg -l x2gobroker-daemon
...
ii  x2gobroker-daemon                             0.0.0.5-0~x2go1
                    X2Go http(s) based session broker (daemon)

$ sudo dpkg -i x2gobroker-daemon_0.0.0.5-0~x2go1_all.deb
(Reading database ... 58838 files and directories currently installed.)
Preparing to replace x2gobroker-daemon 0.0.0.5-0~x2go1 (using
x2gobroker-daemon_0.0.0.5-0~x2go1_all.deb) ...
 * Stopping X2Go Session Broker standalone daemon x2gobroker

                                               [ OK ]
Unpacking replacement x2gobroker-daemon ...
Setting up x2gobroker-daemon (0.0.0.5-0~x2go1) ...
Group x2gobroker already exists.
User x2gobroker already exists.
dpkg: error processing x2gobroker-daemon (--install):
 subprocess installed post-installation script returned error exit status 1
Processing triggers for ureadahead ...
Errors were encountered while processing:
 x2gobroker-daemon

If I do a purge of the x2gobroker-daemon package and then install it, it
installs fine.

-- 
Anders Bruun Olsen
It-ansvarlig
Det Danske Sprog- og Litteraturselskab
(Society for Danish Language and Literature)