Scribus installing pdf x and more

 

In brief do the following to get Scribus installed and working correctly (version 1.3.3.12)...

Add the following repository to apt:
deb http://debian.scribus.net/debian/ hardy main non-free

Then get the Scribus archive key:
gpg --keyserver wwwkeys.eu.pgp.net --recv-keys EEF818CF

Next, add this to apt-key:
gpg --armor --export EEF818CF | sudo apt-key add -

Now do: sudo apt-get update

And finally: sudo apt-get install scribus

You should also consider installing the ICC profiles to ensure PDF/X works:
sudo apt-get install icc-profiles