sources.list ---> MINT vs UBUNTU

Change your APT sources
========================

Edit the sources.list as root (sudo gedit /etc/apt/sources.list) to make it look like this:

## -----------------------
## LINUX MINT REPOSITORIES
## -----------------------

## +++ Linux Mint 5 Elyssa (stable) +++
deb http://packages.linuxmint.com elyssa main upstream import

## +++ Backports (not as stable) +++
## deb http://packages.linuxmint.com elyssa backport

## +++ Community (not as stable) +++
## deb http://packages.linuxmint.com elyssa community

## +++ Romeo (unstable) +++
## deb http://packages.linuxmint.com elyssa romeo

## +++ Source Repositories +++
## deb-src http://packages.linuxmint.com elyssa main upstream import
## deb-src http://packages.linuxmint.com elyssa community
## deb-src http://packages.linuxmint.com elyssa backport
## deb-src http://packages.linuxmint.com elyssa romeo

## -------------------
## UBUNTU REPOSITORIES
## -------------------

## +++ Ubuntu 8.04 Hardy (stable) +++
deb http://archive.ubuntu.com/ubuntu hardy main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu hardy-updates main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse

## +++ Backports & Proposed (not as stable) +++
## deb http://archive.ubuntu.com/ubuntu hardy-backports main restricted universe multiverse
## deb http://archive.ubuntu.com/ubuntu hardy-proposed main restricted universe multiverse

## +++ Source Repositories +++
## deb-src http://archive.ubuntu.com/ubuntu hardy main restricted universe multiverse
## deb-src http://archive.ubuntu.com/ubuntu hardy-updates main restricted universe multiverse
## deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse
## deb-src http://archive.ubuntu.com/ubuntu hardy-backports main restricted universe multiverse
## deb-src http://archive.ubuntu.com/ubuntu hardy-proposed main restricted universe multiverse

## ------------------
## OTHER REPOSITORIES
## ------------------

## +++ Canonical (stable) +++
deb http://archive.canonical.com/ubuntu hardy partner

## +++ Medibuntu (stable) +++
deb http://packages.medibuntu.org/ hardy free non-free


reference
http://www.linuxmint.com