Drupal imagecache and robots.txt

Today i discovered a very stupid configuration in Imagecache module for Drupal. Imagecache saves all presets (thumbs, big images, etc) in subdirectory /sites/default/files/imagecache/[presetname]/. Of course this is conflicting with robots.txt, which says “Disallow: /sites/”. I created a few sites that really are targeted for Google`s image search, but I couldn`t find a single pic in google. This is so annoying to find out. I just removed the deriative in robots.txt and will update this post with results soon.