Fix Version/s: None
r73036 & 0.4.2RC1 & 0.4.1 & 0.4.0 are affected the very same way
AC97 sound VBox 4.3.40
the audio & video playback is stuttering, playing the same file in VLC works like a charm.
We see fixme spam while playing
I double-checked, stuttering is not caused by spamming-COM-port-delay: it stutters even when logging is disabled.