Thanks for taking the time to report this bug and helping to make Ubuntu better.
Can you grep for libvirt and kvm in your syslog, and look for any oopses? grep libvirt /var/log/syslog grep kvm /var/log/syslog The two kvm processes at the end of your bug description - I assume those were after you had libvirt restart them? Or is it rather that the kvm processes kept running while libvirt lost its connection to them? Finally, could you upload your /var/log/apt/term.log and /var/log/dpkg.log files? ** Changed in: libvirt (Ubuntu) Status: New => Incomplete ** Changed in: libvirt (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in Ubuntu. https://bugs.launchpad.net/bugs/767218 Title: Guest machines crashed during apt-get update/upgrade on Lucid -- 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