QA needs a small crash course on setting up cluster with the new memcached feature:

• do you run memcache on all nodes or only one ?
• example on how to specify server port numbers etc in ezp's config files...
• it is just to start memcache with a given portnumber?
• how to easiest check that ezpublish<-->memcache config is working?
• JV mentioned something about a patch need in stash ? can you send us that
  please?