hdaf@neoLaptop:~$ sudo apt-get update
[sudo] password for hdaf:
Ign http*//extras.ubuntu.com saucy InRelease
Ign http*//ppa.launchpad.net saucy InRelease
Ign http*//archive.canonical.com saucy InRelease
Ign http*//archive.ubuntu.com saucy InRelease
Ign http*//extras.ubuntu.com saucy InRelease
Ign http*//ppa.launchpad.net saucy InRelease
Ign http*//archive.canonical.com saucy InRelease
Ign http*//archive.ubuntu.com saucy-updates InRelease
Ign http*//ppa.launchpad.net saucy InRelease
Get:1 http*//extras.ubuntu.com saucy Release.gpg [72 B]
Ign http*//archive.canonical.com saucy InRelease
Ign http*//archive.ubuntu.com saucy-backports InRelease
Ign http*//ppa.launchpad.net saucy Release.gpg
Ign http*//extras.ubuntu.com saucy Release.gpg
Get:2 http*//archive.canonical.com saucy Release.gpg [933 B]
Ign http*//archive.ubuntu.com saucy-security InRelease
Get:3 http*//ppa.launchpad.net saucy Release.gpg [316 B]
Hit http*//extras.ubuntu.com saucy Release
Get:4 http*//archive.ubuntu.com saucy Release.gpg [933 B]
Get:5 http*//archive.canonical.com saucy Release.gpg [933 B]
Get:6 http*//ppa.launchpad.net saucy Release.gpg [316 B]
Ign http*//extras.ubuntu.com saucy Release
Ign http*//ppa.launchpad.net saucy Release
Get:7 http*//archive.ubuntu.com saucy-updates Release.gpg [933 B]
Ign http*//archive.canonical.com saucy Release.gpg
Hit http*//extras.ubuntu.com saucy/main Sources
Hit http*//ppa.launchpad.net saucy Release
Get:8 http*//archive.ubuntu.com saucy-backports Release.gpg [933 B]
Hit http*//extras.ubuntu.com saucy/main amd64 Packages
Get:9 http*//archive.canonical.com saucy Release [5916 B]
Hit http*//ppa.launchpad.net saucy Release
Hit http*//extras.ubuntu.com saucy/main i386 Packages
Get:10 http*//archive.ubuntu.com saucy-security Release.gpg [933 B]
Hit http*//archive.canonical.com saucy Release
Hit http*//archive.ubuntu.com saucy Release
Ign http*//archive.canonical.com saucy Release
Get:11 http*//archive.ubuntu.com saucy-updates Release [49,6 kB]
Get:12 http*//archive.canonical.com saucy/partner Sources [1290 B]
Get:13 http*//archive.canonical.com saucy/partner amd64 Packages [693 B]
Get:14 http*//archive.canonical.com saucy/partner i386 Packages [1883 B]
Hit http*//archive.ubuntu.com saucy-backports Release
Get:15 http*//archive.ubuntu.com saucy-security Release [49,6 kB]
Get:16 http*//archive.canonical.com saucy/partner Sources [1290 B]
Get:17 http*//ppa.launchpad.net saucy/main Sources [727 B]
Hit http*//archive.canonical.com saucy/partner amd64 Packages
Hit http*//ppa.launchpad.net saucy/main amd64 Packages
Hit http*//archive.ubuntu.com saucy/restricted amd64 Packages
Hit http*//ppa.launchpad.net saucy/main i386 Packages
Hit http*//archive.canonical.com saucy/partner i386 Packages
Hit http*//archive.ubuntu.com saucy/main amd64 Packages
Hit http*//archive.ubuntu.com saucy/universe amd64 Packages
Get:18 http*//ppa.launchpad.net saucy/main Sources [3336 B]
Hit http*//archive.ubuntu.com saucy/multiverse amd64 Packages
Hit http*//archive.ubuntu.com saucy/restricted i386 Packages
Hit http*//ppa.launchpad.net saucy/main amd64 Packages
Hit http*//archive.ubuntu.com saucy/main i386 Packages
Hit http*//ppa.launchpad.net saucy/main i386 Packages
Hit http*//archive.ubuntu.com saucy/universe i386 Packages
Hit http*//archive.ubuntu.com saucy/multiverse i386 Packages
Hit http*//archive.ubuntu.com saucy/main Translation-en
Hit http*//archive.ubuntu.com saucy/multiverse Translation-en
Hit http*//archive.ubuntu.com saucy/restricted Translation-en
Hit http*//archive.ubuntu.com saucy/universe Translation-en
Get:19 http*//archive.ubuntu.com saucy-updates/restricted amd64 Packages [14 B]
Get:20 http*//archive.ubuntu.com saucy-updates/main amd64 Packages [49,4 kB]
Get:21 http*//archive.ubuntu.com saucy-updates/universe amd64 Packages [18,1 kB]
Get:22 http*//archive.ubuntu.com saucy-updates/multiverse amd64 Packages [14 B]
Get:23 http*//archive.ubuntu.com saucy-updates/restricted i386 Packages [14 B]
Get:24 http*//archive.ubuntu.com saucy-updates/main i386 Packages [49,1 kB]
Get:25 http*//archive.ubuntu.com saucy-updates/universe i386 Packages [18,1 kB]
Get:26 http*//archive.ubuntu.com saucy-updates/multiverse i386 Packages [14 B]
Ign http*//extras.ubuntu.com saucy/main Translation-en_US
Get:27 http*//archive.ubuntu.com saucy-updates/main Translation-en [20,5 kB]
Ign http*//extras.ubuntu.com saucy/main Translation-en
Err http*//extras.ubuntu.com saucy/main Sources
404 Not Found
Err http*//extras.ubuntu.com saucy/source Sources
404 Not Found
Hit http*//archive.ubuntu.com saucy-updates/multiverse Translation-en
Err http*//extras.ubuntu.com saucy/main amd64 Packages
404 Not Found
Err http*//ppa.launchpad.net saucy/main amd64 Packages
404 Not Found
Err http*//extras.ubuntu.com saucy/source amd64 Packages
404 Not Found
Hit http*//archive.ubuntu.com saucy-updates/restricted Translation-en
Err http*//ppa.launchpad.net saucy/source amd64 Packages
404 Not Found
Err http*//extras.ubuntu.com saucy/main i386 Packages
404 Not Found
Err http*//ppa.launchpad.net saucy/main i386 Packages
404 Not Found
Err http*//extras.ubuntu.com saucy/source i386 Packages
404 Not Found
Err http*//ppa.launchpad.net saucy/source i386 Packages
404 Not Found
Get:28 http*//archive.ubuntu.com saucy-updates/universe Translation-en [10,7 kB]
Ign http*//extras.ubuntu.com saucy/main Translation-en_US
Ign http*//ppa.launchpad.net saucy/main Translation-en_US
Ign http*//extras.ubuntu.com saucy/main Translation-en
Ign http*//ppa.launchpad.net saucy/main Translation-en
Hit http*//archive.ubuntu.com saucy-backports/restricted amd64 Packages
Ign http*//extras.ubuntu.com saucy/source Translation-en_US
Ign http*//ppa.launchpad.net saucy/source Translation-en_US
Hit http*//archive.ubuntu.com saucy-backports/universe amd64 Packages
Ign http*//extras.ubuntu.com saucy/source Translation-en
Hit http*//archive.ubuntu.com saucy-backports/multiverse amd64 Packages
Ign http*//ppa.launchpad.net saucy/source Translation-en
Hit http*//archive.ubuntu.com saucy-backports/main amd64 Packages
Ign http*//ppa.launchpad.net saucy/main Translation-en_US
Hit http*//archive.ubuntu.com saucy-backports/restricted i386 Packages
Ign http*//ppa.launchpad.net saucy/main Translation-en
Ign http*//ppa.launchpad.net saucy/main Translation-en_US
Hit http*//archive.ubuntu.com saucy-backports/universe i386 Packages
Ign http*//ppa.launchpad.net saucy/main Translation-en
Hit http*//archive.ubuntu.com saucy-backports/multiverse i386 Packages
Hit http*//archive.ubuntu.com saucy-backports/main i386 Packages
Hit http*//archive.ubuntu.com saucy-backports/main Translation-en
Hit http*//archive.ubuntu.com saucy-backports/multiverse Translation-en
Hit http*//archive.ubuntu.com saucy-backports/restricted Translation-en
Hit http*//archive.ubuntu.com saucy-backports/universe Translation-en
Get:29 http*//archive.ubuntu.com saucy-security/restricted amd64 Packages [14 B]
Get:30 http*//archive.ubuntu.com saucy-security/main amd64 Packages [23,6 kB]
Ign http*//archive.canonical.com saucy/partner Translation-en_US
Ign http*//archive.canonical.com saucy/partner Translation-en
Get:31 http*//archive.ubuntu.com saucy-security/universe amd64 Packages [4010 B]
Ign http*//archive.canonical.com saucy/partner Translation-en_US
Get:32 http*//archive.ubuntu.com saucy-security/multiverse amd64 Packages [14 B]
Ign http*//archive.canonical.com saucy/partner Translation-en
Get:33 http*//archive.ubuntu.com saucy-security/restricted i386 Packages [14 B]
Err http*//archive.canonical.com saucy/saucy Sources
404 Not Found
Get:34 http*//archive.ubuntu.com saucy-security/main i386 Packages [23,6 kB]
Err http*//archive.canonical.com saucy/partner Sources
404 Not Found
Err http*//archive.canonical.com saucy/source Sources
404 Not Found
Get:35 http*//archive.ubuntu.com saucy-security/universe i386 Packages [4033 B]
Err http*//archive.canonical.com saucy/partner amd64 Packages
404 Not Found
Get:36 http*//archive.ubuntu.com saucy-security/multiverse i386 Packages [14 B]
Err http*//archive.canonical.com saucy/source amd64 Packages
404 Not Found
Err http*//archive.canonical.com saucy/partner i386 Packages
404 Not Found
Hit http*//archive.ubuntu.com saucy-security/main Translation-en
Err http*//archive.canonical.com saucy/source i386 Packages
404 Not Found
Ign http*//archive.canonical.com saucy/partner Translation-en_US
Hit http*//archive.ubuntu.com saucy-security/multiverse Translation-en
Ign http*//archive.canonical.com saucy/partner Translation-en
Hit http*//archive.ubuntu.com saucy-security/restricted Translation-en
Ign http*//archive.canonical.com saucy/source Translation-en_US
Ign http*//archive.canonical.com saucy/source Translation-en
Hit http*//archive.ubuntu.com saucy-security/universe Translation-en
Ign http*//archive.ubuntu.com saucy/main Translation-en_US
Ign http*//archive.ubuntu.com saucy/multiverse Translation-en_US
Ign http*//archive.ubuntu.com saucy/restricted Translation-en_US
Ign http*//archive.ubuntu.com saucy/universe Translation-en_US
Ign http*//archive.ubuntu.com saucy-updates/main Translation-en_US
Ign http*//archive.ubuntu.com saucy-updates/multiverse Translation-en_US
Ign http*//archive.ubuntu.com saucy-updates/restricted Translation-en_US
Ign http*//archive.ubuntu.com saucy-updates/universe Translation-en_US
Ign http*//archive.ubuntu.com saucy-backports/main Translation-en_US
Ign http*//archive.ubuntu.com saucy-backports/multiverse Translation-en_US
Ign http*//archive.ubuntu.com saucy-backports/restricted Translation-en_US
Ign http*//archive.ubuntu.com saucy-backports/universe Translation-en_US
Ign http*//archive.ubuntu.com saucy-security/main Translation-en_US
Ign http*//archive.ubuntu.com saucy-security/multiverse Translation-en_US
Ign http*//archive.ubuntu.com saucy-security/restricted Translation-en_US
Ign http*//archive.ubuntu.com saucy-security/universe Translation-en_US
Fetched 342 kB in 20s (16,7 kB/s)
W: Failed to fetch http*//extras.ubuntu.com/ubuntu/dists/dists/saucy/main/source/Sources 404 Not Found
W: Failed to fetch http*//extras.ubuntu.com/ubuntu/dists/dists/saucy/source/source/Sources 404 Not Found
W: Failed to fetch http*//extras.ubuntu.com/ubuntu/dists/dists/saucy/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http*//extras.ubuntu.com/ubuntu/dists/dists/saucy/source/binary-amd64/Packages 404 Not Found
W: Failed to fetch http*//extras.ubuntu.com/ubuntu/dists/dists/saucy/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http*//extras.ubuntu.com/ubuntu/dists/dists/saucy/source/binary-i386/Packages 404 Not Found
W: Failed to fetch http*//ppa.launchpad.net/tualatrix/ppa/ubuntu/dists/dists/saucy/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http*//ppa.launchpad.net/tualatrix/ppa/ubuntu/dists/dists/saucy/source/binary-amd64/Packages 404 Not Found
W: Failed to fetch http*//ppa.launchpad.net/tualatrix/ppa/ubuntu/dists/dists/saucy/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http*//ppa.launchpad.net/tualatrix/ppa/ubuntu/dists/dists/saucy/source/binary-i386/Packages 404 Not Found
W: Failed to fetch http*//archive.canonical.com/ubuntu/dists/dists/saucy/saucy/source/Sources 404 Not Found
W: Failed to fetch http*//archive.canonical.com/ubuntu/dists/dists/saucy/partner/source/Sources 404 Not Found
W: Failed to fetch http*//archive.canonical.com/ubuntu/dists/dists/saucy/source/source/Sources 404 Not Found
W: Failed to fetch http*//archive.canonical.com/ubuntu/dists/dists/saucy/partner/binary-amd64/Packages 404 Not Found
W: Failed to fetch http*//archive.canonical.com/ubuntu/dists/dists/saucy/source/binary-amd64/Packages 404 Not Found
W: Failed to fetch http*//archive.canonical.com/ubuntu/dists/dists/saucy/partner/binary-i386/Packages 404 Not Found
W: Failed to fetch http*//archive.canonical.com/ubuntu/dists/dists/saucy/source/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
O repositório não possui esse caminho. Você deve procurar uma entrada semelhante a:
deb http://extras.ubuntu.com/ubuntu/dists/ saucy main
Observe o final dists no URL. Remova todas essas linhas. Ou, se você quiser, pode usar sed para corrigir as linhas de uma só vez.
sudo sed -i 's/\/dists//g' /etc/apt/sources.list /etc/apt/sources.list.d/*.list