[Zope] On a CMF site, when user get "404 Not Found" error, it appears they are logged out automatically....

[Gary Zhu]

Hi,

In a CMF site, (Plone site too) when a member tries to load a page that 
doesn't exist. They get the
site error page.  However, this page gives the appearance as if the user 
as been automatically
logged out.  Because, in the header of the site, CMF displays the user 
as Guest, and plone displays
"you are not logged in".

Is this a bug, or is there a reason behind this behavior.

I am using zope 2.7.4, cmf 1.4.7, plone 2.0.5

Thanks,

Gary