validation agent.
[Download and install the Firefox/Iceweasel
-add-on](http://archive.monkeysphere.info/monkeysphere.xul)
+add-on](http://archive.monkeysphere.info/xul-ext/monkeysphere.xpi)
Once you have installed the add-on, you will need to restart your
browser, and then proceed to install the monkeysphere package and