I've had a somewhat similar experience with my email. I would get the "ghost" notifications, open the email folder, then the notifications would go away until the next push cycle. The only way I have found around this issue is that when it happens, I go into my email account on a computer and "read" the latest emails, and the notifications go away. Don't really like this work around, but since it doesn't happen very often I can live with it. Not sure this will work for you, but you might try it. Good luck.