Also, uncheck the first option: "Turn notification on when you post or reply to a topic."
It enabled itself on my account somehow a couple week ago.
The email notifications were fixed (it was a major long-term issue that jopari was working on for a while, and the issue predated the move to the new server). Anyways, because it was fixed, notifications became active again for accounts that didn't have it disabled.
(If you had previously disabled email notifications on your forum account a long time ago--for when you post or reply to a topic--you wouldn't have recently gotten several email notifications at once after everything was fixed.)
^__^; Hope that clarifies things.