[Zope-dev] PCGI-Problem

Hi all, i have a little problem. We have several Zope's running in our company. Versions are 2.5.1,2.6.1,2.6.2. All are running on Redhat Linux. All versions have the same problem, if i access them via pcgi and hit the Restart button in the Control Panel then the server goes down. If i do the same via ZServer port 8080 everything works fine. Has anybody found the same problem or is it a misconfiguration ? Many thanks in advance for your help.