Hi all, I am using Zope2.3.3 & CMF1.1 with ZEO1.0b3. The CMF site was working fine all through. But suddenly, there is a problem in authenticating users. That is, whenever a method such as portal_membership.getAuthenticatedMember().getMemberId()" or "portal_membership.getAuthenticatedMember().getUserName()" is invoked from a DTML method, I get the following error message. Error Type: MemberDataError Error Value: Can't find user data. Also, "portal_membership.isAnonymousUser()" returns 0. I also checked that portal_membership.getAuthenticatedMember()" returns the member. But I am surprised that I am unable to get the attributes of the member object like name or id. Has anyone faced this sort of problem? Or does anyone know under what circumstances such functions as getMemberId(), getUserName() returns an error? Thanks for any help & suggestions. This is the traceback I get. Traceback (innermost last): File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 187, in publish File /export/usr/local/Zope3/Zope_software_home/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 171, in publish File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/OFS/DTMLMethod.py, line 189, in __call__ (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_St ring.py, line 540, in __call__ (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Le t.py, line 149, in render (Object: member="portal_membership.getAuthenticatedMember()") File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Le t.py, line 148, in render (Object: name="member.getUserName()") File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Ut il.py, line 339, in eval (Object: member.getUserName()) (Info: member) File <string>, line 0, in ? File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Ut il.py, line 144, in careful_getattr File /export/usr/local/Zope3/Zope_software_home/lib/python/OFS/DTMLMethod.py, line 261, in validate (Object: copy_of_news_box) File /export/usr/local/Zope3/Instance_home/Products/CMFCore/MemberDataTool.py, line 337, in __str__ File /export/usr/local/Zope3/Instance_home/Products/CMFCore/MemberDataTool.py, line 287, in getMemberId File /export/usr/local/Zope3/Instance_home/Products/CMFCore/MemberDataTool.py, line 278, in getUser MemberDataError: (see above) Regards, Priya