At least you've gotten emails. I haven't for any of the threads I've subscribed to (they do have new posts). My email address is in my profile. Do I need to do something else, too?
UPDATE: I just received notification emails for one of the threads I subscribe to but not the other, so I guess it'll just be slow going.
I'm getting them all (eventually), did you set your profile to automatically subscribe you to threads you've posted in? That how I did it, rather then having to remember to subscribe to them individually.