Столкнулся с такой проблемой.
Дело в том, что когда появляются новые версии какой либо программы (игра simutrans), то в karmic по прежнему находится старая версия, а в lucid последняя.
Приходится в ручную удалять старую версию, и скачивать deb фалы, новой версии. С другими программами аналогично.
Вот мой sourses.list
# deb cdrom:[Ubuntu 9.10 _Karmic Koala_ - Release amd64 (20091027.1)]/ karmic main restricted
deb-src http://archive.ubuntu.com/ubuntu/ karmic main restricted #Added by software-properties
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic main restricted
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic restricted main multiverse universe #Added by software-properties
## Major bug fix updates produced after the final release of the
## distribution.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-updates main restricted
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic-updates restricted main multiverse universe #Added by software-properties
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic universe
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic multiverse
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-updates multiverse
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://ru.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse
# deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu karmic partner
# deb-src http://archive.canonical.com/ubuntu karmic partner
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-security main restricted
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic-security restricted main multiverse universe #Added by software-properties
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-security universe
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-security multiverse
deb http://qutim.org/debian/jaunty jaunty main
Заменил karmic на lucid. И он предложил обновиться, аж 786 мб. Испугался, так как один раз так обновлением снес себе ubuntu.
Где правильно нужно поставить lucid, что бы программы были всегда свежие, а не те что в karmic.