mailman installation failing

[MR ZenWiz]

On Thu, Jan 20, 2011 at 11:41 AM, Noah <noah-list at enabled.com> wrote:
> Hi there,
>
> apt-get clean did not help and I am still getting the same error.
>
> Setting up mailman (1:2.1.9-9ubuntu1.2) ...
> Installing site language es .............................................
> done.
> Installing site language en ............................................
> done.
> Downgrade detected, from version 0x2010bf0 to version 0x20109f0
> This is probably not safe.
> Exiting.
>
> what else can I try?
>
Please try bottom posting.

Also, it sounds like you have mailman installed already and you're
trying to install an older version that the one already there.  If you
really want to do this, you should first run apt-get purge mailman,
but I'd be careful about such endeavors.