Comment 0 for bug 854866

gmetad 3.1.7-2 won't install on oneiric.

{{{
    ...
    Get:7 http://us.archive.ubuntu.com/ubuntu/ oneiric/universe gmetad amd64 3.1.7-2 [29.5 kB]
    ...
    Selecting previously deselected package gmetad.
    Unpacking gmetad (from .../gmetad_3.1.7-2_amd64.deb) ...
    ...
    Setting up gmetad (3.1.7-2) ...
    Adding group: ganglia.
    Adding system user: ganglia.
    useradd: group ganglia exists - if you want to add this user to that group, use -g.
    dpkg: error processing gmetad (--configure):
     subprocess installed post-installation script returned error exit status 9
    ...
    Errors were encountered while processing:
     gmetad
}}}

useradd tries to create a group 'ganglia' that's already been created.