Hi
This was posted in the linux/unix forum but may belong here.

http://forums.slimdevices.com/showthread.php?t=24089

It seems to effect a 6.3 installation after some event. In my case it was clicking on a particular music folder under browse music.

I have the post by wr420 towards the end but all the post in there seem to describe a similar problem. If you need more details please let me know.
malioto (at) acpac (dot) com