What's the story concerning ID3 tags on the M6?

I have all my mp3s tagged correctly but when I transfer them to the miniplayer and update the music library, it can't read some of them and just lists them under unknown artists. I've seen some people mention that only id3v1.1 is supported, I've seen other people state that only id3v2.3 is supported? What's the deal, how do I get all of my tags to show up correctly on the miniplayer?

Thanks for the help!

both ID3.1 and 3.2 are supported I think. They are both accepted by my player.
I did have problems with OGG tags though.

My advice: use 3.1 to be sure and dont make the tags too long...