Resume: we had a Dell PowerApp 120 running RH 7.0, Apache 1.3.x, Zope 2.5.0 binairy release upgraded to 2.5.1 we upgraded the machine to RH 7.3 with ext3, Apache 1.3.23 build python 2.1.3 from source rpm with '%define config_tkinter 0' build zope 2.5.1 from source (NOT rpm) exported CMF-sites from old Zope, imported them in new Zope to avoid 2GB Data.fs size limit (tested succesfully :-) added rewrite rules to apache: RewriteEngine On RewriteRule ^/(.*) http://127.0.0.1:8080/VirtualHostBase/http/%{HTTP_HOST}:80/$1 [L,P] started all. Now the following happens: logging into the ZMI as manager on port 8080 : OK logging into the ZMI as manager on port 80 : OK logging into CMF site as a user on port 8080 : OK logging into CMF site as a user on port 80 : redirection to login page What did we do wrong? - - Roel Van den Bergh