Public bug reported: this is the error I get when trying to update...........
W:GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9A06AEF9CB8DB0, W:GPG error: http://ppa.launchpad.net oneiric Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C2518248EEA14886, W:Failed to fetch cdrom://Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)/dists/natty/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs , W:Failed to fetch cdrom://Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)/dists/natty/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs , W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/precise-proposed/Release Unable to find expected entry 'universedeb/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file) , W:Failed to fetch http://ppa.launchpad.net/pmjdebruijn/darktable-release/ubuntu/dists/YOUR_UBUNTU_VERSION_HERE/main/source/Sources 404 Not Found , W:Failed to fetch http://ppa.launchpad.net/nikount/orta-desktop/ubuntu/dists/oneiric/main/source/Sources 404 Not Found , W:Failed to fetch http://ppa.launchpad.net/nikount/orta-desktop/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found , E:Some index files failed to download. They have been ignored, or old ones used instead. ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1021476 Title: unable to update packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1021476/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
