Most images not loading properly on firefox today?

What would cause images to not load? It doesn’t seem to matter what site I visit today, most of the images are showing as a link or just text.

I switched to IE just now, so I think it’s exclusively a problem with my Firefox, but I am not sure just yet.

Any ideas?

EDIT: It isn’t working properly on IE, either. I’m getting the little boxes with the red X on several pages.