#0  0xb70c884d in ?? () from /usr/lib/libpulse.so.0
#1  0xb709ee40 in pa_operation_unref () from /usr/lib/libpulse.so.0
#2  0xb7215f3c in ?? () from /usr/lib/alsa-lib/libasound_module_pcm_pulse.so
#3  0xb7169149 in ?? () from /usr/lib/libasound.so.2
#4  0xb711ed21 in snd_pcm_drop () from /usr/lib/libasound.so.2
#5  0xb7124fd9 in snd_pcm_close () from /usr/lib/libasound.so.2
#6  0xb721bb55 in ?? () from /usr/lib/libcanberra/libcanberra-alsa.so
#7  0xb721c136 in ?? () from /usr/lib/libcanberra/libcanberra-alsa.so
#8  0xb755750f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0xb74d47ee in clone () from /lib/tls/i686/cmov/libc.so.6