I modified the sources.list file, but I still receive the same error message.
#
# deb cdrom:[Ubuntu-Server 10.04.2 LTS _Lucid Lynx_ - Release i386 (20110211.1)]/ lucid main restricted
# deb cdrom:[Ubuntu-Server 10.04.2 LTS _Lucid Lynx_ - Release i386 (20110211.1)]/ lucid main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
# deb http://s2plmirror01.prod.sdl2.secureserver.net/ubuntu/ lucid main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ precise main restricted
## Major bug fix updates produced after the final release of the
## distribution.
# deb http://s2plmirror01.prod.sdl2.secureserver.net/ubuntu/ lucid-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted
## 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://s2plmirror01.prod.sdl2.secureserver.net/ubuntu/ lucid universe
deb-src http://us.archive.ubuntu.com/ubuntu/ precise universe
# deb http://s2plmirror01.prod.sdl2.secureserver.net/ubuntu/ lucid-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-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://s2plmirror01.prod.sdl2.secureserver.net/ubuntu/ lucid multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ precise multiverse
# deb http://s2plmirror01.prod.sdl2.secureserver.net/ubuntu/ lucid-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-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://us.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-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 precise partner
deb-src http://archive.canonical.com/ubuntu precise partner
# deb http://s2plmirror01.prod.sdl2.secureserver.net/ubuntu lucid-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
# deb http://s2plmirror01.prod.sdl2.secureserver.net/ubuntu lucid-security universe
deb-src http://security.ubuntu.com/ubuntu precise-security universe
# deb http://s2plmirror01.prod.sdl2.secureserver.net/ubuntu lucid-security multiverse
deb-src http://security.ubuntu.com/ubuntu precise-security multiverse
deb http://archive.ubuntu.com/ubuntu precise main
deb http://apt.sourcefabric.org/ precise main
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