I've been asked to investigate why the images on a particular site cannot be viewed in IE (6/7 and 8, multiple machines) but is visible in all other browsers. I've verified that it has nothing to do with the site itself by downloading the image and placing it as an image in a local HTML file, with the same result. Accessing the url directly in the address bar in IE again does not display the image, only the little red X.
Here's the image: http://i.stack.imgur.com/qxJJa.gif
Why would all other browsers show this image except IE? What can I do to get the image to work in IE?