@Todor, do you know if any other virsh activity is going on every time that happens? For instance, create, destroying, or even just listing guests?
I'm going to mark this as also affect libvirt (which i think is more likely to be the problem). Coudl you run 'apport-collect 1022901' to have apport upload some debugging information? ** Also affects: libvirt (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1022901 Title: Ubuntu 12.04 64bit Guest (qemu/kvm) dies randomly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1022901/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs