Is anyone else experiencing this rendering problem (see attached photo)? It happens to me everyday on a variety of different websites with no common theme that I can tell. To correct it I have to restart the browser and after an indeterminate period of browsing it will happen again. What you see in the photo tends to happen more on shopping websites (particularly Amazon.com), whereas on other websites buttons and dropdown menus will be empty or just not work. This has been happening ever since I upgraded to Firefox 16, on multiple computers. I have tried (clean) re-installing and nothing seems to work. This doesn't happen with Safari or Opera on the same systems with the same plug-ins. The only thing I've changed in about:config is the tabs on top view, as I can't stand that view. Any ideas at all?