Bill I'm blocking GoogleImageProxy, are you?
Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:188.8.131.52) Gecko/2009021910 Firefox/3.0.7 (via ggpht.com GoogleImageProxy)
Been seeing this UA scrape images from robots.txt disallowed directories. The same images also fly "X-Robots-Tag: noindex" in the response header, yet these images are showing up in Google's Image Search. So far my demands for them to be removed have been ignored.