Comment 21 for bug 1057024

So I installed a fresh quantal-amd64 (20121004) and then
             - sudo apt-get install kvm
             - Install Virtual Machine Manager from the Software Center
            - Add the user to the libvirtd group
            - Logout and login back
            - Copy a quantal iso to the desktop
            - Then follow the steps in comment #6

And the problem occurred despite there is no virtualbox installed in this system. The logs are attached.

That include,
         lsmod
         dmesg when the issue occurred
         syslog
        /var/log/libvirt/qemu/*.log
        and other command outputs requested earlier