I came across something intereseting in one of the picture display modes of the video archive (the one with 4 small thumbnails on bottom row and a single large picture on on top. Often the 1st three large pictures in a directory displays in low resolution, with the corresponding thumbnails using correct aspect ratio. However the remaining pictures will display in high resolution, but their corresponing thumbnails will have wrong aspect ratio. Switching modes sometimes changes the behavior, but can't do it reliably.