[Zope] Upgraded to 2.1.6, now all pages return an unauthorized error!

[Bill Anderson]

> As a result, the site is entirely unusable.                         
> I can login to management screens, and do management stuff, but     
_even_                                                                
> as manager, can't view any pages!                                   
                                                                      
Additional info:                                                      
After trying to view a page, I have to reauthenticate in the          
management screen to do anything. Specifically, I have to go back to  
the base management URL, as if I was re-logging in.                   
                                                                      
--                                                                    
Bill Anderson                                                         
Immortality Systems		   http://www.immortalitysystems.net             
Systems that span the test of time.