Following the same AOL logic (and certain other ISPs/connection speeds) this is also common on very constricted or low bandwidth connections, or being routed through what AOL jokingly refers to as a proxy...especially when large amounts of images are trying to be dithered in-browser simultaneously. If your browser has timeout options, you could also increase those.
Also, if you are on an older machine (and this is more of a long-shot) low RAM really makes images die with modern sites. Could also be firewall issues if you are dealing with images that are being dynamically served.
But, we're all kind of shooting all over the place without a little bit more detail from you.