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W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ oneiric/multiverse amd64 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_oneiric_multiverse_binary-amd64_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ oneiric/main i386 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_oneiric_main_binary-i386_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ oneiric/multiverse i386 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_oneiric_multiverse_binary-i386_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/main amd64 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_main_binary-amd64_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/universe amd64 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_universe_binary-amd64_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/multiverse amd64 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_multiverse_binary-amd64_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/restricted amd64 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_restricted_binary-amd64_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/main i386 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_main_binary-i386_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/universe i386 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_universe_binary-i386_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/multiverse i386 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_multiverse_binary-i386_Packages)
W: Duplicate sources.list entry http://ubuntu.mirror.cambrium.nl/ubuntu/ precise-proposed/restricted i386 Packages (/var/lib/apt/lists/ubuntu.mirror.cambrium.nl_ubuntu_dists_precise-proposed_restricted_binary-i386_Packages)