I too am having this problem with RuneScape. I've played RS for 9 years and never had a problem. I've used avast for many years as well and there has never been a conflict with the two. Does anyone know if the issue has been resolved yet that will allow us to use both RS and avast together without leaving our computers vulnerable? Thank you Pippyspot, do you know when the next definitions update might be? I have had this problem now for almost a week.