To test: Install precise. On precise, enable multiple architectures (say amd64 and i386) install libkadm5srv-mit8.
Update your sources.list to trusty, try installing libkadm5srv-mit8. I'd expect that to fail. Update your sources.list to also include trusty-proposed. Upgrade libkadm5srv-mit8; I'd expect that to succeed. I've phrased that in terms of manually changing sources.list rather than using the release upgrader, because I don't know how to do a release upgrade with proposed enabled. If there's an easy way to do that, then I'd expect the following to work: Install precise including both amd64 and i386 and install libkadm5srv-mit8. Do a release upgrade. I'd expect it to fail. Install precise including both amd64 and i386. Install libkadm5srv-mit8. Do a release upgrade to trusty with proposed enabled. I'd expect that to succeed. --Sam -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1334052 Title: package libkadm5srv-mit8 1.10.1+dfsg-6.1ubuntu1 failed to install/upgrade: libkadm5srv-mit8:all 1.12+dfsg-2ubuntu4 (Multi-Arch: no) kann nicht zusammen mit libkadm5srv-mit8 installiert werden, welches mehrere installierte Instanzen hat To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/krb5/+bug/1334052/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs