Hope this helps clear it up for some. If not please drop me a PM.
Step 1
You will need to go into the "User CP" and look for the "Edit Options" under the "Setting & Options" heading. Click on it
Step 2
In the "Messaging & Notification" box you will need to change your "Default Thread Subscription Mode". This will effect all future threads you post too.
Step 3
Now to clear up your current subscriptions. Click on the "User CP" and look for the "List Subscriptions" in the "Subscribed Threads" box. Click on it
Step 4
In the Subscribed threads in Folder, on the right hand side, click the threads you would like to change the subscription for.
Step 5
At the bottom of the Box you will find a drop down, which lists the different options. Here you can delete the subscriptions or update the frequency to daily or weekly updates.
Clear as mud?
I hope not and if you have questions, please send me a PM. I am here to help.
Jason