Liferay.Portlet.onLoad (/html/js/liferay/portlet.js:480) is not being fired for "2_WAR_notificationsportlet". Because of this, the "portletReady" event doesn't get fired for "notificationsportlet".
In addition, the "allPortletsReady" event never gets fired, due to the fact that Liferay.Portlet.list never reaches zero length (see portlet.js:543)
This is on a "clean" server (Default Theme, no portal-/site-wide extensions/applications), on a "clean" page with one portlet (my custom portlet). Happens if user is logged in or a guest. Happens in Firefox 28 and Chrome 33.0.1750.154.