When I first signed up here I had the same problem.. I still haven't received any Email Notification, so i'm guessing that Ron, Hunny or another Moderator has disable that option

The easiest way to keep track of your threads, anyway, is every time you log in click the User CP button at the top left of the screen. It'll show any threads you've subscribed to, and if any of your threads (or threads you've posted in) have any new replies

peace

-GHoSToKeR-