Yes, it is still happening. Actually, I have never "subscribed" to a thread either, it just happened ever since we moved to the "new" boards. Every time I post to a thread, I automatically get an e-mail every time someone else posts to the thread. I get TONS of e-mails every day since this happened. I don't mind, because, sometimes I will post to a thread, then I forget all about it, and then, the next day (or 2-3 days later), I get one of these e-mails and I can click on the link and go back to the thread and read the other person's post. If I don't want to get anymore e-mails for a certain thread, there is a "link" I can click on to "unsubscribe" to that particular thread.
I'm not sure what kind of "browser" I have, my husband is the "computer person" of the house and he is still sleeping right now.