Update problems due to "installation of packages from not authenticated sources" error
- by Denis Hoss
I have some problems updating my Ubuntu
Requires installation of untrusted packages
The action would require the installation of packages from not authenticated sources.
cinnamon gir1.2-muffin-3.0 libgnome-keyring-common libgnome-keyring0 libmuffin0 muffin-common
The downloads are from the Main server, the Source code under Ubuntu Software tab is marked
Is there something I have missed?
The output of sudo apt-get update is:
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 6A9653F936FD5529
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 A777609328949509
W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ oneiric/partner i386 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_oneiric_partner_binary-i386_Packages)