I don't post much here, but I have the same problem. Some threads I did post to or subscribed I saw 1 email and that was at least a couple months back. For instance I am subscribed to Lynch's build thread, but I haven't had a email for it ever since I subscribed.
B15NEOVVL put it well earlier....
P.S.
Its fixed now, but for the longest time the forum was in Spanish, despite me changing it to English. I forgot what I did to fix that.