mark@mythtv-backend:~$ sudo apt-get update
Ign http://gb.archive.ubuntu.com vivid InRelease
Ign http://gb.archive.ubuntu.com vivid-updates InRelease
Ign http://gb.archive.ubuntu.com vivid-backports InRelease
Ign http://security.ubuntu.com vivid-security InRelease
Hit http://security.ubuntu.com vivid-security Release.gpg
Hit http://security.ubuntu.com vivid-security Release
Hit http://gb.archive.ubuntu.com vivid Release.gpg
Get:1 http://gb.archive.ubuntu.com vivid-updates Release.gpg [933 B]
Hit http://gb.archive.ubuntu.com vivid-backports Release.gpg
Hit http://gb.archive.ubuntu.com vivid Release
Get:2 http://gb.archive.ubuntu.com vivid-updates Release [63.5 kB]
Hit http://security.ubuntu.com vivid-security/restricted Sources
Hit http://gb.archive.ubuntu.com vivid-backports Release
Hit http://security.ubuntu.com vivid-security/restricted amd64 Packages
Hit http://security.ubuntu.com vivid-security/restricted i386 Packages
Get:3 http://gb.archive.ubuntu.com vivid-updates/main Sources [26.5 kB]
Hit http://security.ubuntu.com vivid-security/restricted Translation-en
Hit http://security.ubuntu.com vivid-security/main Sources
Hit http://security.ubuntu.com vivid-security/universe Sources
Hit http://security.ubuntu.com vivid-security/multiverse Sources
Get:4 http://gb.archive.ubuntu.com vivid-updates/restricted Sources [28 B]
Get:5 http://gb.archive.ubuntu.com vivid-updates/universe Sources [10.6 kB]
Get:6 http://gb.archive.ubuntu.com vivid-updates/multiverse Sources [729 B]
Get:7 http://gb.archive.ubuntu.com vivid-updates/main amd64 Packages [57.7 kB]
Hit http://security.ubuntu.com vivid-security/main amd64 Packages
Hit http://security.ubuntu.com vivid-security/universe amd64 Packages
Get:8 http://gb.archive.ubuntu.com vivid-updates/restricted amd64 Packages [28 B]
Hit http://security.ubuntu.com vivid-security/multiverse amd64 Packages
Get:9 http://gb.archive.ubuntu.com vivid-updates/universe amd64 Packages [33.8 kB]
Hit http://security.ubuntu.com vivid-security/main i386 Packages
Hit http://security.ubuntu.com vivid-security/universe i386 Packages
Hit http://security.ubuntu.com vivid-security/multiverse i386 Packages
Get:10 http://gb.archive.ubuntu.com vivid-updates/multiverse amd64 Packages [1,159 B]
Get:11 http://gb.archive.ubuntu.com vivid-updates/main i386 Packages [57.2 kB]
Hit http://security.ubuntu.com vivid-security/main Translation-en
Hit http://security.ubuntu.com vivid-security/multiverse Translation-en
Ign http://ppa.launchpad.net vivid InRelease
Ign http://ppa.launchpad.net vivid InRelease
Ign http://ppa.launchpad.net vivid InRelease
Ign http://ppa.launchpad.net vivid InRelease
Get:12 http://gb.archive.ubuntu.com vivid-updates/restricted i386 Packages [28 B]
Hit http://ppa.launchpad.net vivid Release.gpg
Ign http://ppa.launchpad.net vivid Release.gpg
Get:13 http://gb.archive.ubuntu.com vivid-updates/universe i386 Packages [33.8 kB]
Hit http://ppa.launchpad.net vivid Release.gpg
Hit http://ppa.launchpad.net vivid Release.gpg
Hit http://ppa.launchpad.net vivid Release
Hit http://security.ubuntu.com vivid-security/universe Translation-en
Ign http://ppa.launchpad.net vivid Release
Hit http://ppa.launchpad.net vivid Release
Hit http://ppa.launchpad.net vivid Release
Get:14 http://gb.archive.ubuntu.com vivid-updates/multiverse i386 Packages [1,410 B]
Hit http://gb.archive.ubuntu.com vivid-updates/restricted Translation-en
Hit http://gb.archive.ubuntu.com vivid-backports/main Sources
Hit http://gb.archive.ubuntu.com vivid-backports/restricted Sources
Hit http://gb.archive.ubuntu.com vivid-backports/universe Sources
Hit http://gb.archive.ubuntu.com vivid-backports/multiverse Sources
Hit http://gb.archive.ubuntu.com vivid-backports/main amd64 Packages
Hit http://gb.archive.ubuntu.com vivid-backports/restricted amd64 Packages
Hit http://gb.archive.ubuntu.com vivid-backports/universe amd64 Packages
Hit http://gb.archive.ubuntu.com vivid-backports/multiverse amd64 Packages
Hit http://ppa.launchpad.net vivid/main amd64 Packages
Hit http://ppa.launchpad.net vivid/main i386 Packages
Hit http://ppa.launchpad.net vivid/main Translation-en
Hit http://gb.archive.ubuntu.com vivid-backports/main i386 Packages
Hit http://gb.archive.ubuntu.com vivid-backports/restricted i386 Packages
Hit http://gb.archive.ubuntu.com vivid-backports/universe i386 Packages
Hit http://gb.archive.ubuntu.com vivid-backports/multiverse i386 Packages
Hit http://gb.archive.ubuntu.com vivid-backports/main Translation-en
Hit http://gb.archive.ubuntu.com vivid-backports/multiverse Translation-en
Hit http://gb.archive.ubuntu.com vivid-backports/restricted Translation-en
Hit http://gb.archive.ubuntu.com vivid-backports/universe Translation-en
Hit http://gb.archive.ubuntu.com vivid/main Sources
Hit http://ppa.launchpad.net vivid/main amd64 Packages
Hit http://gb.archive.ubuntu.com vivid/restricted Sources
Hit http://ppa.launchpad.net vivid/main i386 Packages
Hit http://gb.archive.ubuntu.com vivid/universe Sources
Hit http://ppa.launchpad.net vivid/main Translation-en
Hit http://gb.archive.ubuntu.com vivid/multiverse Sources
Hit http://ppa.launchpad.net vivid/main amd64 Packages
Hit http://gb.archive.ubuntu.com vivid/main amd64 Packages
Hit http://ppa.launchpad.net vivid/main i386 Packages
Hit http://gb.archive.ubuntu.com vivid/restricted amd64 Packages
Hit http://ppa.launchpad.net vivid/main Translation-en
Hit http://gb.archive.ubuntu.com vivid/universe amd64 Packages
Hit http://gb.archive.ubuntu.com vivid/multiverse amd64 Packages
Hit http://gb.archive.ubuntu.com vivid/main i386 Packages
Hit http://gb.archive.ubuntu.com vivid/restricted i386 Packages
Hit http://gb.archive.ubuntu.com vivid/universe i386 Packages
Hit http://gb.archive.ubuntu.com vivid/multiverse i386 Packages
Hit http://gb.archive.ubuntu.com vivid/main Translation-en_GB
Hit http://gb.archive.ubuntu.com vivid/main Translation-en
Hit http://gb.archive.ubuntu.com vivid/multiverse Translation-en_GB
Err http://ppa.launchpad.net vivid/main amd64 Packages
  404  Not Found
Hit http://gb.archive.ubuntu.com vivid/multiverse Translation-en
Hit http://gb.archive.ubuntu.com vivid/restricted Translation-en_GB
Hit http://gb.archive.ubuntu.com vivid/restricted Translation-en
Hit http://gb.archive.ubuntu.com vivid/universe Translation-en_GB
Hit http://gb.archive.ubuntu.com vivid/universe Translation-en
Hit http://gb.archive.ubuntu.com vivid-updates/main Translation-en
Hit http://gb.archive.ubuntu.com vivid-updates/multiverse Translation-en
Err http://ppa.launchpad.net vivid/main i386 Packages
  404  Not Found
Hit http://gb.archive.ubuntu.com vivid-updates/universe Translation-en
Ign http://ppa.launchpad.net vivid/main Translation-en_GB
Ign http://ppa.launchpad.net vivid/main Translation-en
Fetched 288 kB in 13s (21.1 kB/s)
W: Failed to fetch http://ppa.launchpad.net/mythbuntu/testing/ubuntu/dists/vivid/main/binary-amd64/Packages  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/mythbuntu/testing/ubuntu/dists/vivid/main/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.