I don't succeed anymore starting today in seeing the previews neither the images to natural greatness, with the previews the writing of the category always goes out me and when click on this loads me the page of the image but without image, only the background and the publicities. This only with the recent images (since yesterday to today). The same problem also i upload my images. I have tried with IE and there are not problems.

I have the same problem, but IE doesn't show anything either. I am behind a university network again [as I was last year when I couldn't see any images for a while], but it doesn't affect any other sites.

Well, now don't have more problem. It's all right!