Yesterday I got a message from Avast advertizing their new Antitracking software. Sounded like a good idea, so I went ahead and bought it. Shortly after installing it I was unable to connect to any website, or indeed to do much else. Task monitor showed the Avast Antitrack Filter was using 50% of my CPU and most of my RAM. All attempts to sign on to a website (BBC, facebook, etc) timed out, although the icon showed LAN was working. Admittedly, my PC is not state-of-the-art, but an older HP I bought a year ago. However, it has served to write with Word and surf the web until now. Once I disabled the Avast Antitrack software, I could surf normally. Users beware: it might be a nice idea, but this antitracker is VERY EXPENSIVE in terms of CPU time and storage.