Using backports.org is very simple: If you want to get announcements about security updates on backports.org subscribe to the backports-security-announce mailinglist. 1. Add this line deb http://www.backports.org/debian lenny-backports main contrib non-free to your /etc/apt/sources.list. 2. Run apt-get update 3. All backports are deactivated by default (i.e. the packages are pinned to 1 by using