Hi garagenclown,

please have a look at /etc/sysconfig/apache2, especially "APACHE_MPM":

Code:
## Type:        list(prefork,worker,event,itk)
## Default:     ""
## ServiceRestart: apache2
#
# MPM (multi-processing module) to use.
#
# Needed to determine with which MPM apache will run, as well as
# against which header files modules will be built. 
#
# If not set, the system will simply pick one of the installed MPMs.
#
# The implementation of the logic is in /usr/share/apache2/find_mpm,
# a script which can be used standalone as well if needed.
#
APACHE_MPM=""
Regards,
J