Okay, I thought this was an isolated incident but it's really getting on my nerves now. Here is a few lines of my config.ini:

[ir_translate]
PopUp0=Detail,KnobSeek,Mark,Repeat,Shuffle,Sound,Time,VolAdj,PopUp1
PopUp1=Artist,Album,Genre,Year,Popup0

Now, from time to time I will navigate to the tweak "buttons" in the PopUp1 and select "artist" so it can find another tune by the artist currently being played back. As you know it should display a "matching artist/album found" message and just insert this found tune to play back after the current one. So I select it and it just jumps to some other random song (with no message) right at that moment but the current shuffle is not just thrown out. I was in shuffle mode (all playlists) and I made note of the next ten songs in my current shuffle. I pressed the artist button and it worked ok the 1st, 2nd, and 3rd times and then it happened - it jumped to some unrelated song but the rest of the playlist was still the same.

I haven't deliberatley tested it in an unshuffled playlist but if my memory serves correctly, it has happened in that instance as well.

Also, I can't recall this happening while using the remote control for this.