[CentOS] kvm, CentOS as guest / recommendations needed

Hello, I'm still searching for the ideal solution for Matryoshka-ing
CentOS, i.e. using it as a guest under qemu/kvm. Given the fact that I'm a
victim of this bug
http://bugs.centos.org/view.php?id=2912
(5.2 host/5.2 guest) I'm stuck a little bit, so I tried different debian
variants as hosts:
sid unstable: ok
proxmox VE: ok
intrepid ibex (8.10): ok
hardy heron (8.04): not ok

Using an intel-vt capable dual cpu server / x86_64 arc, with the above
effect, what would you recommend to me as a host OS if I wanted to run
CentOS 4.x/5.x and debian guests with kvm only? I'd like to administer the
whole thing with virsh.
TIA, regards
Michael