OK, this goes back 6 or so of your most recent posts and you did not have email notification checked on any of them... but, your most recent post (this one) is checked.... so, I'm guessing you checked your profile and maybe noticed you didnt have Use 'Email Notification' by default? checked to yes... ??
If you want to subscribe to your past threads you will have to go to each one and click the subscribe to this thread link....
okay, if I want to subscribe I now have to click on "subcribe to thread"
before, (unless I am mistaken) I would be auto. subscribed any time that I make a reply to a thread.