mod_fcgid: HTTP request length 131484 exceeds MaxRequestLen (131072)

[gjsiiger]

I'm having some problems with FastCGI on my Plesk 9.5.4 Linux server running CentOS 5.8 (64-bit)

Trying to add either FcgidMaxRequestLen or MaxRequestLen throws an error and apache refuses to start:
"Invalid command 'MaxRequestLen', perhaps misspelled or defined by a module not included in the server configuration"

I have searched Google all day without finding a solution.

[root@mw-02 conf]# rpm -qa | grep -i fcgi
psa-mod-fcgid-configurator-1.0-14
ruby-fcgi-0.8.7-200705221357
psa-fcgi-2.4.0-2
psa-mod_fcgid-1.10-3