Ubuntu repository list
## Main
deb http://archive.ubuntu.com/ubuntu/ lucid main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu/ karmic main restricted universe multiverse
## Updates
deb http://archive.ubuntu.com/ubuntu/ lucid-updates main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu/ karmic-updates main restricted universe multiverse
## Backports
deb http://archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse
## Proposed