el contenido del archivo sources.list es:
deb cdrom: :[Ubuntu 4.10 _Warty Warthog_ - Preview 1386 Binary-1 (20041020)]/ unstable main restricted
##Uncomment the following two lines to fetch update software from network
#deb
http://us.archive.ubuntu.com/ubuntu warty main restricted
#deb
http://us.archive.ubuntu.com/ubuntu warty main restricted
##Main
deb
http://us.archive.ubuntu.com/ubuntu hoary main
deb-src
http://us.archive.ubuntu.com/ubuntu hoary main
##Seguridad-Main
deb
http://security.ubuntu.com/ubuntu hoary-security main restricted
deb-src
http://security.ubuntu.com/ubuntu hoary-security main restricted
##Seguridad-Universo
deb
http://security.ubuntu.com/ubuntu hoary-security universe
deb-src
http://security.ubuntu.com/ubuntu hoary-security universe
##Universo
deb
http://us.archive.ubuntu.com/ubuntu hoary universe
deb-src
http://us.archive.ubuntu.com/ubuntu hoary universe
##Multiverso
deb
http://archive.ubuntu.com/ubuntu hoary multiverse
deb-src
http://archive.ubuntu.com/ubuntu hoary multiverse
##Marillat
deb
ftp://ftp.nerim.net/debian-marillat stable main
deb
ftp://ftp.nerim.net/debian-marillat unstable main
deb
ftp://ftp.nerim.net/debian-marillat testing main
##Backports
deb
http://backports.ubuntuforums.org/backports/ hoary-backports main universe