.
Thread 3 (Thread 7736):
#0  0x00007fd3ddaff82d in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007fd3dbc1e689 in ?? () from /usr/lib/libnspr4.so
#2  0x00007fd3dbc1f27c in PR_WaitCondVar () from /usr/lib/libnspr4.so
#3  0x00007fd3dac3a5de in ?? () from /usr/lib/xulrunner-1.9.1.2/libxul.so
#4  0x00007fd3dbc24e3a in ?? () from /usr/lib/libnspr4.so
#5  0x00007fd3ddafaa04 in start_thread () from /lib/libpthread.so.0
#6  0x00007fd3dcbd164d in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()
.
Thread 2 (Thread 12290):
#0  0x00007fd3dcbc5203 in poll () from /lib/libc.so.6
#1  0x00007fd3dbc20cff in ?? () from /usr/lib/libnspr4.so
#2  0x00007fd3dbc26b64 in ?? () from /usr/lib/libnspr4.so
#3  0x00007fd3dbc24e3a in ?? () from /usr/lib/libnspr4.so
#4  0x00007fd3ddafaa04 in start_thread () from /lib/libpthread.so.0
#5  0x00007fd3dcbd164d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()
.
Thread 1 (Thread 7730):
#0  0x00007fd3ddb0305b in raise () from /lib/libpthread.so.0
#1  0x00007fd3dac21c80 in ?? () from /usr/lib/xulrunner-1.9.1.2/libxul.so
#2  <signal handler called>
#3  0x00007fd3bd4b1370 in ?? ()
#4  0x00007fd3d840767e in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
#5  0x00007fd3d841d896 in ?? () from /usr/lib/libgobject-2.0.so.0
#6  0x00007fd3d841ecde in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#7  0x00007fd3d841f263 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#8  0x00007fd3d6fada92 in gdk_display_close ()
   from /usr/lib/libgdk-x11-2.0.so.0
#9  0x00007fd3dac197dc in ?? () from /usr/lib/xulrunner-1.9.1.2/libxul.so
#10 0x00007fd3dac1d949 in XRE_main ()
   from /usr/lib/xulrunner-1.9.1.2/libxul.so
#11 0x000000000040265f in ?? ()
#12 0x00007fd3dcb10abd in __libc_start_main () from /lib/libc.so.6
#13 0x0000000000401ed9 in ?? ()
#14 0x00007ffff12d1698 in ?? ()
#15 0x000000000000001c in ?? ()
#16 0x0000000000000005 in ?? ()
#17 0x00007ffff12d381d in ?? ()
#18 0x00007ffff12d383c in ?? ()
#19 0x00007ffff12d384b in ?? ()
#20 0x0000000000000000 in ?? ()