Looks like the bug have been fixed in karmic. (I got it by mistake when I installed virt-manager 0.7.0-3ubuntu1, but forgot to install libvirt of corresponding version).
** Tags removed: karmic -- Cannot determine QEMU argv syntax https://bugs.launchpad.net/bugs/400150 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. -- 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