I still haven't tracked down what could cause the not-sharing under FreeBSD. I caved in and got some people from my local BSD user group to help me look into it
In the meantime , if anyone reading this is running mp2 under FreeBSD, would be you kind enough to help me by sending me some quick outputs ( offlist or on ):
shared/reseident memory size ps aux | grep httpd Apache compile options usually either: /usr/local/sbin/httpd -V /usr/local/apache2/bin/httpd -V