Comment 16 for bug 418448

...and the version in the ubuntu-audio-dev (pulseaudio-0.9.16~test7-14-g7ca81) does NOT fix the problem:

frank@ostrogoth:/usr/src/pulseaudio-0.9.16~test7-14-g7ca81/src$ pulseaudio -k;script -c 'gdb pulseaudio' ~/debug_pa_5
E: main.c: Failed to kill daemon: No such file or directory
Script started, file is /home/frank/debug_pa_5
...
(gdb) r
Starting program: /usr/bin/pulseaudio
[Thread debugging using libthread_db enabled]
Executing new program: /usr/bin/pulseaudio
[Thread debugging using libthread_db enabled]
W: pid.c: Stale PID file, overwriting.
[New Thread 0xb3d48b70 (LWP 21109)]
[New Thread 0xb3541b70 (LWP 21110)]

Program received signal SIGILL, Illegal instruction.
[Switching to Thread 0xb3d48b70 (LWP 21109)]
0x001473b4 in pa_volume_s16ne_sse (samples=0xb3d8e028, volumes=0xb3d45ca0,
    channels=2, length=8) at pulsecore/svolume_sse.c:86
86 __asm__ __volatile__ (

Same problem...