The ACFplugin.com site vas awfully slow on the old PowerEdge 1850 server with only 4GB of ram, and many other sites on as well. Now I have moved it to a new server – A Dell R610 with two processors and 96GB RAM. This greatly improved the site as well.
The plugin has been in production use for several customers for over a year now, and there has not been any reports of bugs on or any issues at all. The plugin in its final version seems to be pretty stable and works well – both on Windows, Mac, and as a server plugin.