.
Thread 4 (Thread 14236):
#0  0x00294422 in __kernel_vsyscall ()
No symbol table info available.
#1  0x005deb56 in poll () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0x05a422de in ?? () from /usr/lib/libavahi-common.so.3
No symbol table info available.
#3  0x05a40a3d in avahi_simple_poll_run () from /usr/lib/libavahi-common.so.3
No symbol table info available.
#4  0x05a412d0 in avahi_simple_poll_iterate ()
   from /usr/lib/libavahi-common.so.3
No symbol table info available.
#5  0x05a41320 in avahi_simple_poll_loop () from /usr/lib/libavahi-common.so.3
No symbol table info available.
#6  0x05a420cb in ?? () from /usr/lib/libavahi-common.so.3
No symbol table info available.
#7  0x00df396e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#8  0x005ec9de in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
.
Thread 3 (Thread 14234):
#0  0x00294422 in __kernel_vsyscall ()
No symbol table info available.
#1  0x005deb56 in poll () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0x061e9502 in ?? () from /usr/lib/libpulse.so.0
No symbol table info available.
#3  0x061d5a59 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
No symbol table info available.
#4  0x061d7a13 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
No symbol table info available.
#5  0x061d7ae4 in pa_mainloop_run () from /usr/lib/libpulse.so.0
No symbol table info available.
#6  0x061e92a3 in ?? () from /usr/lib/libpulse.so.0
No symbol table info available.
#7  0x08947e02 in ?? () from /usr/lib/libpulsecommon-0.9.21.so
No symbol table info available.
#8  0x00df396e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#9  0x005ec9de in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
.
Thread 2 (Thread 14232):
#0  0x0100f1f3 in XFreeGC () from /usr/lib/libX11.so.6
No symbol table info available.
#1  0x0017a4a4 in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#2  0x001803ee in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#3  0x00164c1d in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#4  0x00164dc9 in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#5  0x00167d49 in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#6  0x00167f6a in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#7  0x001643c7 in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#8  0x0014af46 in ?? () from /usr/lib/libcairo.so.2
No symbol table info available.
#9  0x00144f6d in cairo_fill_preserve () from /usr/lib/libcairo.so.2
No symbol table info available.
#10 0x00144f92 in cairo_fill () from /usr/lib/libcairo.so.2
No symbol table info available.
#11 0x007016df in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#12 0x0070329c in gdk_window_begin_paint_region ()
   from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#13 0x00929fdf in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#14 0x0070782b in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#15 0x00730984 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#16 0x00703f83 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#17 0x00705f9f in gdk_window_process_all_updates ()
   from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#18 0x0070601b in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#19 0x006e2318 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#20 0x0048e661 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#21 0x004905e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
No symbol table info available.
#22 0x004942d8 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#23 0x00494817 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#24 0x0092a299 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#25 0x08056b2d in main ()
No symbol table info available.
.
Thread 1 (Thread 14233):
#0  0x00ed5a91 in sane_xerox_mfp_control_option ()
   from /usr/lib/sane/libsane-xerox_mfp.so.1
No symbol table info available.
#1  0x00d7c34d in sane_dll_control_option () from /usr/lib/libsane.so.1
No symbol table info available.
#2  0x00d7a929 in sane_control_option () from /usr/lib/libsane.so.1
No symbol table info available.
#3  0x080599ec in ?? ()
No symbol table info available.
#4  0x0805a389 in ?? ()
No symbol table info available.
#5  0x004badcf in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#6  0x00df396e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#7  0x005ec9de in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.