Wrong artwork for podcast - does anyone know a fix?

Some of the podcasts show up in my iPhone with the wrong picture. For a long time I thought I did something wrong, but some internet research shows that many more people complain about media files that have the proper artwork in iTunes on the PC are synched on a device with the wrong artwork. I checked my iPad and the same problem occurs there.

Take for example this episode from the Talking History podcast as it shows in the player on my PC (screenshot on the left - correct) and on my iPhone and iPad with the artwork of a totally other podcast (screenshot to the right). As a matter of fact, when you look more closely, more than just the picture is messed up. It seems that more mp3 labels are not exactly in place.

Does anybody else have this problem? Did you manage to solve it? I would love to hear about it and many more with me as the internet is full of complaints about this but few suggestions to solutions.