They can help you with this down on the Technical Board. From the main menu it is all the way down at the bottom of the page.
Go back in to the User CP and to Edit Options and check this part?
Make sure you have it set to No email notification as bolded above and then go down to the bottom and make sure you click on SAVE CHANGES.
Also, everytime you subscribe or reply to a thread there is an option to override your default so make sure you are not accidentally changing that to an Email Notification setting.
Now, for right now. Go up to the Quick Links in the upper Right corner and on the drop down menu go to Subscribed threads. All of your Subscribed threads will come up. If the 2nd box to the right (Notification) doesn't say "None" then click the small box at the top all the way to the right. This should select all the threads on that page. Then scroll down to the bottom of the page to the drop down box in the lower right where it says "Selected Threads". Choose "No Email Notification" and click on Go. That will change all the subscribed threads on that page to no email. Do this for every page of subscribed thread you have.
Hmmmmmmm. Guess you shouldn't need the Tech Board now. Unless none of this works. In that case post down there and a moderator or WM can help you.
Good luck!