Ah yes I know MSE, but it only has incoming virus protection, although I suppose it's fair to say that the router firewall probably makes up for this deficiency. (?) As Avast! free now seems rather determined that I must have Google Chrome as well, I think I may take your advice re MSE. Maybe, maybe not. WinTV-7 had to be reinstalled again yesterday, so that may not have been due to W-7's cleaner. I've had the Glarys in the past and I've now put WRC on both machines. As Windows 7 is is now OK, WinTV apart, we shall have to wait and see.