Just recently I find that, particularly when visiting links from Facebook (via Chrome) the page I'm on is spontaneously dropped and I go back to Facebook. This also happens without Facebook however, sending me back to my home screen from a webpage browsed via Chrome. I'm wondering if this might have to do with my having fairly recently installed Avast anti-spyware on my device. If so, it certainly didn't happen immediately but is a regular bother now. Help?