I have the following error message on this site with W3 Total Cache:
The following memcached servers are not responding or not running:
Object Cache: 127.0.0.1:11211.
This message will automatically disappear once the issue is resolved.
The current Memcached hostname:port / IP:port: value is the default (127.0.0.1:11211) and I have also tried the other suggestion (myqualityoptics.com:11211) and both fail.
The hosting provider for my VPS is looking into the issue, and said that object caching via memcached is installed for each version of PHP on the server already. They are trying a reinstall with SASL enabled to see if this will fix the issue, but so far no luck.
Any thoughts?