Hi all. In the doc/ZODB3.txt of Zope 2.8 (and Zope 2.9) I've found the following paragraph. " ZODB 3 and Zope Database Adapters Most database adapters are *currently* likely to be problematic unless the underlying extensions and libraries: - allow multiple simultaneous database connections, - are thread safe, - give up the Python global interpreter lock when making database calls. This is only a problem when running Zope 2 with multiple threads. " I would like to know if anyone has experience of some of these problems with psycopg 1.1 and ZPsycopgDA Regards Marco -- Marco Bizzarri http://iliveinpisa.blogspot.com/