Ok, I think I got things worked out on the notifications.
The short explanation is:
When you uncheck the box to receive notifications, it will only stay unchecked if you have no threads in your favorites list.
menckenite - You had several posts in your favorites. I deleted all your favorites and unchecked the box, and now it stays unchecked.
So, anyone that wants to stop getting emails from the forums, go into your profile and delete your favorites first, then uncheck the box.
Another setting we used to have is that anytime you replied to a thread it would automatically make it a favorite. That won't happen anymore either, but it is probably why a lot of you have a lot of favorites.