armin@armin-ubuntu:~$ sudo apt-get install mythtv
Reading package lists... Done
Building dependency tree... Done
The following NEW packages will be installed:
  mythtv
0 upgraded, 1 newly installed, 0 to remove and 4 not upgraded.
Need to get 0B/19.1kB of archives.
After unpacking 41.0kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  mythtv
Install these packages without verification [y/N]? Y
DESTROY created new reference to dead object ' Qt::SpacerItem', <> line 1 during global destruction.
Selecting previously deselected package mythtv.
(Reading database ... 144631 files and directories currently installed.)
Unpacking mythtv (from .../mythtv_0.20-fixes-11252.1_all.deb) ...
Setting up mythtv (0.20-fixes-11252.1) ...