Looks vaguely like you've got both i386 and amd64 versions of libnss3 installed and only tried to upgrade the amd64 version for a security update...
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to nss in Ubuntu. https://bugs.launchpad.net/bugs/1374561 Title: package libnss3 2:3.16.3-1ubuntu1 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libnss3/changelog.Debian.gz', which is different from other instances of package libnss3:amd64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nss/+bug/1374561/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
