Since I turned my computer on today, Norton has been detecting and blocking threats designated as SAPE.Heur.47bb every 5-10 seconds consistently. It describes the Origin of these threats as unavailable so there's no way for me to know if there's something I need to remove from my computer to stop it. Is this a known problem? Is there anything I can do? Is there at least a way to stop it letting me know every single time?