I've tried to keep every Thread I reply to from making a Subscription to the Thread. I've deleted all subscription titles and emptied all posts to the threads. I checked to see if I have any subscriptions and the box says I don't have any, but the next thing I notice is I have a blue check mark beside every thread I reply to and the blue check mark represents I'm subscribed to that thread.....Can someone help me get these to stop, after so long these subscriptions slow down my PC.

Thanks