Suddenly problems, Music Library not updating etc

Hi, suddenly my M6SL doesn't love me anymore.

I just switched it on again and it started with a broken background image and the message 'No Music'.

Then after a couple of other problems I tried to format it, har reset it and finally updated the firmware via DFU (SL Version with SL Firmware).

On first sight it looks good again but my uploaded music is just not being recognised. The Update Library takes long and always ends with 'no music' - but I can see the files via USB (with the M6 Browser only the dirs, not the files themself).

Also after disconnecting the M6 appears to be off immediately - black screen. After pressing > to turn it on nothing happens. Then I tried again and suddenly it seemed to be on all the time.

Anyway, how the hell do I make my M6SL to load the music into the library again??

Help much appreciated, thanks.

And I forgot, I can't shutdown anymore! Auto Shutdown freezes after status bar is full (still can hear button sounds though) but nothing else than hard reset works.

I even downgraded to SL Firmware 2004.4 but still the same. No Music library updating (though WORKING mp3 files are on the player), no shutdown. HELL!

Is it broken or what?