Since February 2012 automatic security updates for Ubuntu 8.04 based machines do give an error when trying to query the repository "deb http://security.debian.org/ lenny / updates main" included in the file "security.sources.list ".
I've read that Debian stopped support for those dates for this version. My question is what should I do for a public Production Server (accesible throught Intenet) before a system upgrade (I know that this will be the best option for security). Comment or delete the line of the file "security.sources.list"? or should I add some other source (based on "http://archive.debian.org/debian" or somewhere else)?
Thanks and regards