No it usually happens when I am loading a page. If I sit on a page without going to a new one say if I am listening to my pandora I won’t get the alert. Sometimes though when I load a new page I will get an alert. The reason why I didn’t just assume I had an infection is that before I started getting this alert I’ve noticed at the bottom right of my opera page it would sometimes say waiting for giganticdownload. Like it was loading something from them that had something to do with the webpage. It tends to happen the most with Imgur. Also I am using Opera as my browser if that makes any difference