That didn't seem to work. Should it have been testing for package libvirt-bin, rather than for libvirt? I got this:
Waiting to hear from Launchpad about your decision... Package libvirt not installed and no hook available, ignoring brian@brian-desktop:~$ sudo aptitude show libvirt [sudo] password for brian: No current or candidate version found for libvirt Package: libvirt State: not a real package -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/853580 Title: Unable to start second virtual machine To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/853580/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs