Well, for me things have changed. Ever since Avast installed their very large up-date yesterday morning, I've not seen the malware notification at all. I've had some trouble getting the computer to shut down...it tries to 'log off' for so long that I finally have to just push the power button. So something still seems to be awry, but I've got no new screenshot, or anything to add. Could the up-date have banished the rabbit? Or has it taken a new form? Maybe nothing's wrong at all.
Helen, I'm sorry to hear that you've got a similar problem, but you've come to the right place to receive help! Though not from me. lol Best wishes on that.
So, Sir Essex, if you think there is still something that I need to do, I await your instructions. Thank you for all your help.