Hi Frederick,
I had contact with my hoster and changed servers. Now I can make use of memcache.
I can choose the option now in the W3C admin panel. When I choose this I get the following message:
The following memcached servers are not responding or not running:
Database Cache: 127.0.0.1:11211.
Contacted the hosting again and they informed me that the memcache is available on the following location:
unix:///var/run/byte-memcached/mijncosmetica.nl/memcached.sock
Do you have experience with this? Can I change locations?
Thanks again,
Jeroen