[Zope] Portal views strangeness

[Andreas Tille]

Hello,

I'm running  a couple of Plone and ZMS sites on one of my boxes.  Recently I
faced the problem that I'm not able to view the normal "Contents" in the ZMI
for *some* (not all) of these portals.  If I try to view the portal in ZMI
I just get the "View" view instead the normal overview of the folder as it
is normal in ZMI.  This is true for some Plone and some ZMI sites while other
test sites show the normal behaviour.  I also tested several browsers (Galeon,
Mozilla, Konqueror, Opera, even w3m) and all show the same strange behaviour.

Today I had explicitely to switch to

   http://wr-linux02.rki.ivbb.bund.de:9673/plone_site/portal_migration/manage_overview

to do the migration of this Plone site to a higher Plone version because I
was not able to navigate through normal ZMI to this place.

Any hints?

Kind regards

         Andreas.