[Zope-CMF] why am I Anonymous

[robert]

Hi all,
I have installed Shanes VerboseSecurity.
I am logged in as user robert

However VerboseSecurity reports as foolows

Unauthorized: Your user account does not have the required permission.=20
 Access to 'listFolderContents' of (PloneSite instance at 9d31850) denied.
 Your user account, Anonymous User, exists at (unknown). Access requires
List_folder_contents_Permission, granted to the following roles: ['Manager',
'Owner']. Your roles in this context are ['Anonymous'].

This seems not to have any effect. I do not sees any exception or requests =
to
authenticaded.
But why do I have "temporariliy" the role Anonymous ?

Thanks fo any explanation

mit freundlichen Gr=FCssen

Robert Rottermann
www.redCOR.ch