He wrote, in the comments, that this doesn't fix the problem. I did a local test with the first photo I came to and found the same: http://www.flickr.com/phot

He wrote, in the comments, that this doesn't fix the problem. I did a local test with the first photo I came to and found the same: http://www.flickr.com/photos/pmorgan/32606683/sizes/l/ http://www.flickr.com/photos/pmorgan/32606683/sizes/l/ Even with the Expires header set, it re-requests the entire image.