Yes, in fact as part of another discussion this morning related to password issues, I unplugged the router for a couple of minutes and then plugged it back in (not to mention initiating several reboots from the admin interface before that). I just logged into it now and saw the same three notifications that I have previously dismissed.
Just adding my voice to the chorus that this is an irritation. I don’t expect to have to see notifications over and over… As with anything like this, constant reminders of irrelevant notifications will eventually lead to missing notifications that I should pay attention to.