Updated the flickrRSS plugin for WordPress. Flickr altered the urls for static photos. It affects those using the image cache. If you want to fix the plugin yourself, open flickrrss.php and find the following line:
68: preg_match('<http ://static.flickr.com/d+?/([^.]*).jpg>', $imgurl, $flickrSlugMatches);
and alter the code, so that it reads:
68: preg_match('<http ://farm[0-9]{0,3}.static.flickr.com/d+?/([^.]*).jpg>', $imgurl, $flickrSlugMatches);