I just wanted to let you know, I just installed pulse audio from the audio dev ppa, as suggested by father_ted.
I have now installed:
which seams to be the latest available versions for precise and it didn't solve the problem. I still get
So the workaround didn't work for me.
Assertion 'pa_atomic_load(&(b)->_ref) > 0' failed at pulsecore/memblock.c:590, function pa_memblock_unref(). Aborting.