I've updated Proxy Single Sign-on plugin for v 1.4.1
See the screencast which show the features and architecture of the plug-in. The screencast is for the first version of the plugin, but the user experience and architecture remain the same.
The plugin includes a new widget for greeting the user. The widget software can be used as an example of the "flash message" idea from Rails. It enables software to post a message to the user.
Thanks to Gideon's work on 1.4.1, installation of the plug in is now much smoother. No core files are changed to install the plugin!