[Zope] ZMI Help System

[sebastien Pastor]

Hi there

A strange one here : i cannot access some part of ZMI HELP system.
running Zope 2.7 i got to the manage part of the site using my admin 
login and password. then when i try to access let say "Caching Policies 
Tool Interface" under API Reference i have a pop-up asking for 
authentication again. Trying to put in same admin login and password 
fails ...

Something stupid i am missing here ?

Thanx in advance

seb

Note : it is not a fresh database i ve upgraded from 2.6.2