Here's a strange one that hopefully has an easy answer (but a quick search reveals nothing).
New Plenue D & loaded up all my mp3s. Also updated firmware to v1.14.
All albums are in, but a selection of them are missing the first album letter. So Metallica is called etallica (and filed under e), and Superunknown is called uperunknown (and filed under u).
When using folders to navigate, all is ok, but the albums navigation shows about 10% of albums are like this. All files are mp3s, and the missing letter bug doesn't affect the playing of tracks.
Not a killer, but sure to get really annoying when I can't find Thriller and realise I need to look for hriller. Any help really welcome!!