This is an update on a poor review I gave this plugin about two weeks ago.
It seems that all problems with the recent update were related to not having PHP5.3 running on your host's server.
The plugin developers have addressed that problem and apologised for any inconvenience caused so that's good.
When the PHP version problem arose I searched for another caching plugin to use, but no other plugin comes close to the ease of use of Quick Cache.
I've now installed the latest version on 5 local installs without any problems and I'm upgrading my rating to 5 stars.