Wings reported this issue, and it seems to affect myself too (tested with otenet, hotmail, yahoo emails). What about you, do you get notifications for the topics/board you have subscribed to?
You could reply here (Make sure from Profile > Notifications you have checked "Turn notification on when you post or reply to a topic") and see if you get a notification.
Also, make sure that for "For topics and boards I've requested notification on, notify me" is selected "Instantly", for "For topics and boards I've requested notification on, notify me of:" is selected "Replies and moderation".