it seems that MP's try to generate icons for recorded shows never ends and keeps memory allocated effectively producing memory leak… about 15MB for every entry in recorded TV shows…
And if album ones were album-artist not artist-album given that they are thumbs for albums not artists as then they would be sorted in folder in album order, again making it easy to analyse what has been generated.
[off topic]In fact I do not even use MP's album view very often since I cannot sort it by artist
That's a very good idea, which I will follow.Little hint:
If you have "chaotic" folders like download dirs, mixed samplers, etc it's best to put them into another "share"