* Prevention of possible memory leaks
Depending on your setup, PHP modules, and options, activating
this module may open your apache2 installation to high memory
consumption, which may increase with time.
Apache2 provides a way to keep control of memory consumption,
by setting the MaxRequestsPerChild directive to a non-zero value.
You can read more information about this directive from the httpd
documentation :
http://httpd.apache.org/docs/current/mod/mpm_common.html#maxrequestsperchild