Server limits

Set this in plapache2/conf/extra/httpd-mpm.conf:

<IfModule mpm_prefork_module>
    StartServers          1
    MinSpareServers       1
    MaxSpareServers       1
    MaxClients            1
    MaxRequestsPerChild   0
    ServerLimit           1
</IfModule>

Uncomment this in plapache2/conf/httpd.conf
#Include conf/extra/httpd-mpm.conf