Hi Joey… Since reporting the error a while ago when DPS ground to halt when switching between apps, I have to confess it has all gone quiet on the “waiting for IOProc to fire” front. I’ve not noticed any problems from a user perspective.
That being said, it still appears in the logs after the audio buffers have been resync’d which might be normal for all I know: http://db.tt/Nc0Arkq7
There have been VLC and iTunes (11.0.5) updates in recent weeks.