I've posted this to a couple of others that were having similar concerns, give it a shot!
If you haven't already turned off the email notification... First, go to your
User Control Panels (user cp), then click on
Edit Options. The 6th field down allows you to choose
Email Notification, click
NO.
You can then click on this link to remove all of your subscribed threads:
http://www.disboards.com/forums/mem...&type=allthread
(You can also find it on the first page of the USER CP entitled "view all subscribed threads", from there you would be shown the threads and the above link to unsubscribe.)
If you have already turned off the email notification, just click the link above and the emails should stop.