securing an Ubuntu box in a shared office?

[Dana J. Laude]

On Thursday 06 July 2006 23:16, Mario Vukelic wrote:
> On Thu, 2006-07-06 at 18:31 -0700, Eric Hanchrow wrote:
> > Ironically, "aptitude install bastille" yields this warning:
> >
> >     18:29:27 [root at debian ~]# aptitude install bastille
> > ...
> >     Do you want to continue? [Y/n/?]
> >     WARNING: untrusted versions of the following packages will be
> > installed!
> >
> >     Untrusted packages could compromise your system's security.
> >     You should only proceed with the installation if you are
> > certain that this is what you want to do.
>
> Something must be weird with your repository setup, I don't get this
> warning on 6.06 LTS (Dapper)

I know that if you add a odd or untrusted source you will get this 
message.  See "man apt-key" and also check on the ubuntu wiki.

An example is also here: http://kubuntu.org/announcements/kde-353.php

Dana