I had finally time to check this a bit and looks like reason was few broken files.
I ran fsck which noticed a few broken files. Then I ran fsck with autorepair for that device/mp3-player and problems seems to be vanished. So, I suggest that gui tool should do this automagically (with some confirmation) behind scenes. -- USB device changes automatically as read only https://bugs.launchpad.net/bugs/529489 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs