Checked the commenting: this was allright
Changed Includes to +Includes
Now reads:
------------
# The Options directive is both complicated and important. Please see
#
http://httpd.apache.org/docs/2.2/mod/core.html#options
# for more information.
#
Options Indexes FollowSymLinks +Includes ExecCGI
#
# AllowOverride controls what directives may be placed in .htaccess files.
# It can be "All", "None", or any combination of the keywords:
---------------
Done restart etc. Situation is still the same. I'm going to have a look in the link that you've sent.
Had all indicators green some days ago, but somehow it changed. And I haven't been digging in these setup files before.
Do you have a tip to distiguish if SSI is actually working or not? Now I'm not sure that some errors are not caused by having SSI off.