.
Thread 7 (process 7545):
#0  0x00007fe685ff7c76 in poll () from /lib/libc.so.6
#1  0x00007fe6853e3450 in PR_Poll () from /usr/lib/libnspr4.so.0d
#2  0x00007fe68444534e in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#3  0x00007fe6844459d1 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#4  0x00007fe684445c0f in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#5  0x00007fe684b7ab45 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#6  0x00007fe684b4ef65 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#7  0x00007fe684445f40 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#8  0x00007fe684b7ab9a in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#9  0x00007fe684b4ef65 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#10 0x00007fe684b7af14 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#11 0x00007fe6853e71ca in ?? () from /usr/lib/libnspr4.so.0d
#12 0x00007fe686c2f3f7 in start_thread () from /lib/libpthread.so.0
#13 0x00007fe686000b2d in clone () from /lib/libc.so.6
#14 0x0000000000000000 in ?? ()
.
Thread 6 (process 7548):
#0  0x00007fe686c33e1d in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007fe6853e0e29 in ?? () from /usr/lib/libnspr4.so.0d
#2  0x00007fe6853e1a5a in PR_WaitCondVar () from /usr/lib/libnspr4.so.0d
#3  0x00007fe684b7d8fa in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#4  0x00007fe684b7ab9a in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#5  0x00007fe684b4ef65 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#6  0x00007fe684b7af14 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#7  0x00007fe6853e71ca in ?? () from /usr/lib/libnspr4.so.0d
#8  0x00007fe686c2f3f7 in start_thread () from /lib/libpthread.so.0
#9  0x00007fe686000b2d in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()
.
Thread 5 (process 7552):
#0  0x00007fe686c33b99 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007fe6853e1aec in PR_WaitCondVar () from /usr/lib/libnspr4.so.0d
#2  0x00007fe68498ef59 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#3  0x00007fe6853e71ca in ?? () from /usr/lib/libnspr4.so.0d
#4  0x00007fe686c2f3f7 in start_thread () from /lib/libpthread.so.0
#5  0x00007fe686000b2d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()
.
Thread 4 (process 7553):
#0  0x00007fe686c33b99 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007fe6853e1aec in PR_WaitCondVar () from /usr/lib/libnspr4.so.0d
#2  0x00007fe68498fea8 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#3  0x00007fe6853e71ca in ?? () from /usr/lib/libnspr4.so.0d
#4  0x00007fe686c2f3f7 in start_thread () from /lib/libpthread.so.0
#5  0x00007fe686000b2d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()
.
Thread 3 (process 7563):
#0  0x00007fe686c33b99 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007fe6853e1aec in PR_WaitCondVar () from /usr/lib/libnspr4.so.0d
#2  0x00007fe6853e1b56 in PR_Wait () from /usr/lib/libnspr4.so.0d
#3  0x00007fe684b79e5a in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#4  0x00007fe684b7ab73 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#5  0x00007fe684b4ef65 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#6  0x00007fe684b7af14 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#7  0x00007fe6853e71ca in ?? () from /usr/lib/libnspr4.so.0d
#8  0x00007fe686c2f3f7 in start_thread () from /lib/libpthread.so.0
#9  0x00007fe686000b2d in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()
.
Thread 2 (process 13678):
#0  0x00007fe686c33e1d in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007fe6853e0e29 in ?? () from /usr/lib/libnspr4.so.0d
#2  0x00007fe6853e1a5a in PR_WaitCondVar () from /usr/lib/libnspr4.so.0d
#3  0x00007fe68444e7ab in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#4  0x00007fe68444e86a in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#5  0x00007fe6853e71ca in ?? () from /usr/lib/libnspr4.so.0d
#6  0x00007fe686c2f3f7 in start_thread () from /lib/libpthread.so.0
#7  0x00007fe686000b2d in clone () from /lib/libc.so.6
#8  0x0000000000000000 in ?? ()
.
Thread 1 (process 7518):
#0  0x00007fe686c3769b in raise () from /lib/libpthread.so.0
#1  0x00007fe6843f44b2 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#2  <signal handler called>
#3  0x00007fe685a80876 in ?? () from /usr/lib/xulrunner-1.9b5/libmozjs.so
#4  0x00007fe685a18fcc in JS_GetStringBytes ()
   from /usr/lib/xulrunner-1.9b5/libmozjs.so
#5  0x00007fe6849f5e18 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#6  0x00007fe6849f6e64 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#7  0x00007fe6849f5eee in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#8  0x00007fe684b85239 in NS_InvokeByIndex_P ()
   from /usr/lib/xulrunner-1.9b5/libxul.so
#9  0x00007fe684416541 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#10 0x00007fe68441c1c8 in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#11 0x00007fe685a4e52d in js_Invoke ()
   from /usr/lib/xulrunner-1.9b5/libmozjs.so
#12 0x00007fe685a402c5 in ?? () from /usr/lib/xulrunner-1.9b5/libmozjs.so
#13 0x00007fe685a4e58c in js_Invoke ()
   from /usr/lib/xulrunner-1.9b5/libmozjs.so
#14 0x00007fe684413b3b in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#15 0x00007fe684b85e4a in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#16 0x00007fe684b8531b in ?? () from /usr/lib/xulrunner-1.9b5/libxul.so
#17 0x000000000125bdc0 in ?? ()
#18 0x0000000003112f50 in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x00007fff8f05d170 in ?? ()
#21 0x00007fff8f05d170 in ?? ()
#22 0x0000000000000000 in ?? ()