I've tried sending support requests via W3 backend as a Pro Customer, but have had no response.
Whenever I try to chance from disk caching to say Memcached or APC it won't save on the admin end.
It always says disk. When I click into the General Settings section and let it load up and then click away to another page, it asks me am I sure I wish to change (like as if I've made a change and forgotten to save it) despite not having touched a thing.
I find that in the source code, that the last item I have saved to be memcached or APC will actually be using that method but I cannot change another other service.
So if I set Object cache to Memcached. Save and load a page. It says object cache is using memcache.
If I then set database cache to Memcached. It now says Object cache is using disk and DB cache is using memcache.
Latest WordPress. Latest W3 Total Cache. Nginx + PHP-FPM.