Hi Matt and other zopers, thanks for your help. I've tested other combinations, also with Zope cvs unreleased version at cvs.zope.org, and the test script (province) run well if it's the only script in the ZODB. But inserting it in a CMF 1.1 skin, my Zope (2.4.x, 2.5.x, cvs version, with python 2.1,2.1.1,2.2b2 with and without pymalloc and cycle-gc) auto restart.. with a minor frequency.. but auto restart. The old zbytecode in 2.3.x PythonScripts can help us? It's possible to inactivate the RestrictedPython compiler in a Zope 2.4.x/2.5.x ? The security problem is under control for now (obviously, just for portal with predefined and secure contents editable by users). I think inactivation can be a solution for now, waiting for definitive, well running version of RestrictedPython engine. What do you think about? Bye, Stefano ---------------------------------------------------------- Stefano Noferi n o z e S.r.l. Soluzioni Open-Source Via Caduti del Lavoro, 32 56122 Pisa (PI) - Italy Tel: +39 (0)50 533320 Fax: +39 (0)50 526604 Email: stefano@noze.it Web: http://www.noze.it -= "Whatever you like it to be, it will be" =- ----------------------------------------------------------