I get similar messages on waking from sleep, and the audio is "messed up". Sounds are almost muted and accompanied by a loud buzz. I had another person confirm the same behavior on this forum.
I had a very brief look at the Darwin source code that generates that error, and it was not very informative. It appears that re-establishing the operation of the audio IC after wakeup is problematic on my machine (dual 2GHz). I hope the problem is not electrical so that a bit more attention to the code can clear up the issue.
-Bryan
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