I have an intranet that has been running for several years. Last summer I upgraded to zope 2.6.1. I have recently had users having trouble accessing some Zclass objects (for viewing). For some reason zope is requesting authentication (pop's up the username and password request). As best as I can tell it will not take any username (w/ password), and authenticate it. BUT... if the user cancels the authentication dialog, the everything proceeds as normal (like expected before the authentication dialog poped up). All of the Zclasses in which this probem arises have a base class of ZFile. I created a ZFile object, and it to exhibits this problem. I am confused. Shouldn't zope toss me to a "tried to access an unauthorized object" page? Using the error log I have found that the user is requesting //zope_path/ZFile_object/LOCK. It seems resonable that the LOCK (method?) is causing the problem. Is there some way to make the object call not use LOCK? Has anyone had a simular problem? Any suggestions? TIA Sherman