Coreaudiod spams system log: Enabled automatic stack shots because audio IO is inactive I'm getting my system log virtually spammed with:

May 13 23:56:36 alluminium coreaudiod[238]: Enabled automatic stack shots because audio IO is inactive
May 13 23:56:37 alluminium coreaudiod[238]: Disabled automatic stack shots because audio IO is active
May 13 23:56:38 alluminium coreaudiod[238]: Enabled automatic stack shots because audio IO is inactive
May 13 23:56:39 alluminium coreaudiod[238]: Disabled automatic stack shots because audio IO is active
May 13 23:56:39 alluminium coreaudiod[238]: Enabled automatic stack shots because audio IO is inactive
May 13 23:56:39 alluminium coreaudiod[238]: Disabled automatic stack shots because audio IO is active
May 13 23:56:39 alluminium coreaudiod[238]: Enabled automatic stack shots because audio IO is inactive
May 13 23:56:41 alluminium coreaudiod[238]: Disabled automatic stack shots because audio IO is active
May 13 23:56:41 alluminium coreaudiod[238]: Enabled automatic stack shots because audio IO is inactive
May 13 23:56:42 alluminium coreaudiod[238]: Disabled automatic stack shots because audio IO is active


Googling yields no useful results. Any ideas what this is and how to alleviate it?
Now that 10.8.4 is released (build 12E55), it is still there. I've gotten a response from Apple Engineering that this is logged by design.