[Zope] Zope 2.6.2 on RH9

Anyone running production on the RH9 system with all the available upgrades and patches? I know there have been problems but rumour has it that it is now stable and playing well with Zope. Can anyone confirm from their direct experience? RH9 implements CPU affinity which may be useful for performance tuning in a SMP situation. Has anyone had experience with Zope using the new affinity calls in the 2.5 kernel?