Some but not all text and pictures on websites are blurry. When I copy one of the blurry pictures to my desktop, it makes it clearer. That makes me thinks it's the browser, but I have the same problem with other browsers. It just started when I made Firefox my browser a few weeks ago. I tried decreasing the size of the text in the Display area of the Control Panel. That helped some, but I still have the problem. Most ads on webpages are blurry. Small pictures are usually worse than big ones. Puzzling. Can you help?