Hi again, and thanks for all the replies. Given that we are going to use this to deploy to production within the coming week, we will stick with Python 2.1.3, Zope 2.6.2 and use ZODB 3.1.4. We will wait for Zope 2.7 to stabilise or reach a 2.7.x version before we switch tp Python 2.3.x and ZODB 3.2. Thank you again for all the responses. /dario - -------------------------------------------------------------------- Dario Lopez-Kästen, IT Systems & Services Chalmers University of Tech.