system
9
http://www.avast.com/business
It looks like 4.8 is still being sold as the appropriate business edition. Or is Avast! selling licenses to 4.8 and then advising to upgrade to 6? That seems a bit odd.
Unless something popped up that the user accidentally clicked (for instance, “mark this email as spam?”), no settings have been changed. On the systems that I deal with regularly that run Avast! I never see such prompts.