i have a python product which inhertis from ObjectManager. i programmatically create instances of this product within itself as they are requested by the user. the problem is that i am getting an 'unauthorized' exception when i try to access index_html of the programmatically created objects. the really odd thing is that it only happens SOMETIMES. i get this: Site Error An error was encountered while publishing this resource. Unauthorized Sorry, a site error occurred. Traceback (innermost last): File /usr/local/src/Zope-2.3.3-src/lib/python/ZPublisher/Publish.py, line 223, in publish_module