Wow! seriously, no one?
Well, till the shite stink that it Avast Internet Security on Win8 gets sorted (BSOD, lack of router log on unless Network Script is uninstalled), I've removed AIS (for which I own a legal 3 user 2yr license), and purchased KIS 2013, from DownloadCrew.
Installed that, and voila - EVERYTHING is working perfectly.
Perhaps I'll return to Avast when it gets it house in order, perhaps I'll stick with KIS, who can say.