I tried alot of ideas people mentioned on here, then I started thinking about the website's I would add to my home screen, the ones you don't download, an removed them all, ( which I hated to do), but ever since I haven't had that annoying pop up ( the stock Android has stopped), so just to make sure, I added another website an sure enough, it popped up again, so I removed it, an again it's been great...., hope it works for you...