I am an admin on a site that runs Vbulletin and belong to about a dozen different boards that run Vbulletin, and have been using vBulletin for 8 years now, but this is the first one where I can't seem to get it to kick out an instant email to let me know there's something new in a thread I'm subscribed to. I have the requisite box checked in my settings, but the emails aren't forthcoming. Is this a 4.2.x issue or something I'm doing wrong?