I’ve just realized that the searchengine-setup for Movabletype in a mod_perl environment has not been documented and I thus never added the needed directives to the apache configuration leading the search-engine on this site not to work.
This is fixed now.
For those wondering what to add to the apache-configuration to enable the searchengine with mod_perl, please use the following code snippet to enlighten you:
PerlModule MT::App::Search <Location /mt/search> SetHandler perl-script PerlHandler MT::App::Search PerlSetVar MTConfig /path/to/your/mt.cfg </Location>
gnegg 