No more email notifications?

I used to get email notifications when topics were replyed to but that has stopped happening over the last few weeks. I'm pretty sure all the appropriate things are on in my profile and I'm at a loss as to why it's happening.
It's not too much of a problem since I check the forums every day anyway but it shouldn't be happening as far as I can tell so I figured you'd probably like to know.

I hated those notifications, they spammed my e-mail (not that it's my main one, I just use it for registering.) and I was too lazy to do anything about them.

Maybe it's been disabled on the Control Panel or something has happened with your e-mail. I'll look into it further if I have time, other than that someone else probably has a better answer.

It is a user profile setting and a per-post setting.