>>I use Avast. It works great.
>
>I use Avast too. Have for over 3 years now.
>
>But I still can't say if it works at all, let alone that it works great. What would be a sensible measure that an AV product is working well?

"No crap ever since happened on my machine which I couldn't find on the web as standard behavior of several versions of Windowses documented by many other people", maybe?

If that's the measure, AVG works perfectly too.