(re)install ubuntu 12.x

sudo apt-get install aegir
[sudo] password for XXX:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  aegir
0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded.
1 not fully installed or removed.
Need to get 0 B/5,618 B of archives.
After this operation, 32.8 kB of additional disk space will be used.
Selecting previously unselected package aegir.
(Reading database ... 60705 files and directories currently installed.)
Unpacking aegir (from .../apt/archives/aegir_1.9_all.deb) ...
Setting up aegir-hostmaster (1.9) ...
Aegir frontend (@hostmaster) site detected in /var/aegir/hostmaster-6.x-1.9
it seems to be the same version as the one we're trying to install, not upgrading
Aegir frontend failed to bootstrap, something went wrong!
Look at the log above for clues or run with DPKG_DEBUG=developer
dpkg: error processing aegir-hostmaster (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of aegir:
 aegir depends on aegir-hostmaster (>= 1.9); however:
  Package aegir-hostmaster is not configured yet.
dpkg: error processing aegir (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 aegir-hostmaster
 aegir