Dear all, We had our original website setup on Zope-2.7.0-b2/Python-2.3.2. The website had to be moved to a different server. In order to keep the setup as similar as possible, Zope 2.8.7 was used with Python 2.3.4. There were some issues recently due to which Zope cannot open a connection to a gadfly database and reports it as corrupt with 'bad marshal data' error in the logs. I found this to be a Python problem rather than Zope as the same thing happens when trying to connect the database using Python 2.3.4. The database however, can be opened with newer versions of Python > 2.4. The same error had occurred before in the logs but never caused much downtime. Hence we are considering using a newer version of Python for our website. Python 2.4 is supported from Zope 2.9.1 onwards. My question is should I use 2.9 or use the more recent stable version 2.11.3? Will there be any advantages/disadvantages? Many thanks, Vimal