Comment 27 for bug 691590

A non-root process that uses qemu:///system to run virtual machines (which is required for most network configurations) will lose access to its disk images for good as soon as the domain is started.

First it'll be changed to libvirt-qemu:kvm and once the domain is terminated it will be set to root:root. As a regular user this is nuisance that can be worked around with "sudo chown" (the vast majority of users have this access), but for a daemon that doesn't run as root and doesn't have a human to take care of it and needs access to *its own* disk images, this makes libvirtd as shipped by ubuntu unusable.

I'd highly suggest an SRU for this.

I've been away from Ubuntu development for a while. Is there any particular reason not to just upload the fixed version now?