I'm using qemu-kvm 1.2 and it works (for me) much better than qemu. Under standard qemu I was unable to install windows xp guest (bluescreen during installation), and on other guests disk and network with virtio was unbelievable slow. I'm testing it right now with linux mint livecd; under qemu-kvm it booted in less than 3 minutes to login screen, under qemu (with -enable-kvm) it took more than 6 minutes. With `lsof /dev/kvm` I can see that both qemu-kvm and qemu were using acceleration. I have no experience with qemu 1.3. -- Krzysztof Warzecha
