VBox 4.3.40 + AC97 sound
I booted ros, had no sound (as it sometimes happens since a long time)
I went into device manager and "updated the driver automatically" for "Avance AC97 audio".
I get assertions and exceptions from cdfs_new then.
This is new and did not happen for me months ago.
It is also reproducible.
log2lines log: 0.4.8-dev-257-ge36b89a.log