Installing additional Apache2 modules
 

I have Apache2 and php5 installed on my clean SuSE 11.1 install. I want to add the php modules curl, mcrypt and memcached. I have installed them through the YaST interface and then a2enmod {module} fine. However when I restart the apache server I get :

Module "memcache" is not installed, ignoring.
Check the APACHE_MODULES setting in /etc/sysconfig/apache2.
Module "curl" is not installed, ignoring.
Check the APACHE_MODULES setting in /etc/sysconfig/apache2.
Module "mcrypt" is not installed, ignoring.
Check the APACHE_MODULES setting in /etc/sysconfig/apache2.

I have checked the APACHE_MODULES line and the modules are listed there and they show as installed through YaST so which step have I missed out ? :)