At least not for me. I no longer receive any notifications if someone posts after me on a topic. This has been going on for many months. There's a really old thread from last summer saying the same kind of thing, but it's still happening for me. Is it JUST me or is it everyone?
When I click on the "Notifiy" button, my browser pops up "Are you sure you want to TURN NOTIFICATION OFF for this topic?" so I'm fairly sure I'm SUPPOSED to be getting them, and I have notifications turned on in my profile, and the email address I have used is spelled right, works, is active, and receives email when I send test messages to it. (That should cover the majority of the LNATK errors.