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0f7b58d
(Get the code!)
Right now, the only thing using PA directly is GStreamer, as per the default audio elements in GConf.
If PA is using ALSA DMix, there is *no* user benefit (we don't ship the PA tools, and they're not integrated with the GNOME audio stuff anyway) of using PA and in fact simply adds more resource usage and (unknown) audio latency.
Therefore, we should either:
1. Pull out, switch the GStreamer default outputs back to halaudiosink, and install ESound again, as a dep of u-d, for desktop sound events. This bug can then be closed as Invalid, and we can try again for 8.10.
2. Attempt to actually fix this bug by implementing upstream's "Perfect Setup" and fixing the few bugs that entail.
It seems 2 is the better option, as we have already name-dropped PulseAudio to death in the press.
From what I've gathered, using DMix and DSnoop in PA is the way things are going, which is just a messier final product than 1, above.