i just pulled your latest merge, Faster image processing with photo cache addon
, and find that none of the small youTube thumbnails were displaying. force-refresh or right-click --> reload image didn't help -- until i set "Minimal photo size for caching" to 80, which is pretty damn small.
this did not only happen to old thumbnails already in the DB, but with a new post incl. a youtube link too. is that intended?