Hmm... i was running valgrind for another bug and ran into this...the
last few lines before pulseaudio aborted>

D: module-stream-restore.c: Not restoring device for stream 
sink-input-by-media-role:event, because already set.
D: module-intended-roles.c: Not setting device for stream dialog-question, 
because already set.
I: module-stream-restore.c: Restoring volume for sink input 
sink-input-by-media-role:event.
I: module-stream-restore.c: Restoring mute state for sink input 
sink-input-by-media-role:event.
D: module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_1b.0.analog-stereo 
becomes busy.
I: resampler.c: Forcing resampler 'copy', because of fixed, identical sample 
rates.
D: resampler.c: Channel matrix:
D: resampler.c:        I00 
D: resampler.c:     +------
D: resampler.c: O00 | 1.000
D: resampler.c: O01 | 1.000
I: remap_mmx.c: Using MMX mono to stereo remapping
I: resampler.c: Using resampler 'copy'
I: resampler.c: Using s16le as working format.
D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, 
prebuf=0, minreq=1 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, 
base=4, prebuf=0, minreq=4 maxrewind=0
I: sink-input.c: Created input 86 "dialog-question" on 
alsa_output.pci-0000_00_1b.0.analog-stereo with sample spec s16le 1ch 44100Hz 
and channel map mono
D: core-util.c: posix_madvise() failed (or doesn't exist), trying mlock(): Bad 
file descriptor
D: core-util.c: mlock() worked fine!
D: alsa-sink.c: Requested to rewind 65536 bytes.
D: alsa-sink.c: Limited to 62652 bytes.
D: alsa-sink.c: before: 15663
D: alsa-sink.c: after: 15663
D: alsa-sink.c: Rewound 62652 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 62652 bytes on render memblockq.
D: source.c: Processing rewind...
E: memblock.c: Assertion 'pa_atomic_load(&(b)->_ref) > 0' failed at 
pulsecore/memblock.c:454, function pa_memblock_release(). Aborting.
Aborted (core dumped)

Attaching the valgrind.log. is any other into required? dbg?

** Attachment added: "valgrind.log"
   http://launchpadlibrarian.net/31002036/valgrind.log

-- 
Pulse audio queues audio and gets locked to the app PID
https://bugs.launchpad.net/bugs/411962
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