After upgrading to 2_4-branch, I started having some problems with authentication, or so I thought. I have a standard user folder in the root and an XUF in a top-level folder. After much wailing and gnashing of teeth, I dug into _check_context, and added a debug statement, now I have: def _check_context(self, object): # Check that 'object' exists in the acquisition context of # the parent of the acl_users object containing this user, # to prevent "stealing" access through acquisition tricks. # Return true if in context, false if not or if context # cannot be determined (object is not wrapped). parent = getattr(self, 'aq_parent', None) context = getattr(parent, 'aq_parent', None) if context is not None: if object is None: return 1 if not hasattr(object, 'aq_inContextOf'): if hasattr(object, 'im_self'): # This is a method. Grab its self. object=object.im_self if not hasattr(object, 'aq_inContextOf'): # Object is not wrapped, so return false. return 0 zLOG.LOG('BasicUser._check_context', zLOG.DEBUG, '%s.aq_inContextOf(%s, 1) returned %d' % (object.getPhysicalPath(), context.getPhysicalPath(), object.aq_inContextOf(context, 1))) return object.aq_inContextOf(context, 1) I am getting the following log output: 2002-01-25T16:36:23 DEBUG(-200) BasicUser._check_context ('', 'zope').aq_inContextOf(('', 'zope'), 1) returned 1 and 2002-01-25T16:38:07 DEBUG(-200) BasicUser._check_context ('', 'zope', 'dept', 'is', 'alerts').aq_inContextOf(('', 'zope'), 1) returned 0 Now, the weird part is that this problem is sporadic. It will go away and reappear with some frequency. Any ideas? Anyone?