deb       http://gb.archive.ubuntu.com/ubuntu/ dapper             main multiverse restricted universe
deb-src   http://gb.archive.ubuntu.com/ubuntu/ dapper             main multiverse restricted universe

deb       http://gb.archive.ubuntu.com/ubuntu/ dapper-backports   main multiverse restricted universe
deb-src   http://gb.archive.ubuntu.com/ubuntu/ dapper-backports   main multiverse restricted universe

deb       http://gb.archive.ubuntu.com/ubuntu/ dapper-proposed    main multiverse restricted universe
deb-src   http://gb.archive.ubuntu.com/ubuntu/ dapper-proposed    main multiverse restricted universe

deb       http://gb.archive.ubuntu.com/ubuntu/ dapper-security    main multiverse restricted universe
deb-src   http://gb.archive.ubuntu.com/ubuntu/ dapper-security    main multiverse restricted universe

deb       http://gb.archive.ubuntu.com/ubuntu/ dapper-updates     main multiverse restricted universe
deb-src   http://gb.archive.ubuntu.com/ubuntu/ dapper-updates     main multiverse restricted universe

deb       http://archive.canonical.com/ubuntu/ dapper-commercial  main