.
Thread 3 (process 6994):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb74d16f3 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb6ecfc29 in PR_Poll () from /usr/lib/libnspr4.so
#3  0xb68ca6cb in ?? () from /usr/lib/firefox/components/libnecko.so
#4  0x08168488 in ?? ()
#5  0x00000001 in ?? ()
#6  0xffffffff in ?? ()
#7  0xb6ed34a8 in PR_GetCurrentThread () from /usr/lib/libnspr4.so
#8  0xb68caf02 in ?? () from /usr/lib/firefox/components/libnecko.so
#9  0x08167fa0 in ?? ()
#10 0xb6819368 in ?? ()
#11 0xb6819358 in ?? ()
#12 0xb6ebe20f in PR_SetThreadPrivate () from /usr/lib/libnspr4.so
#13 0xb73ca1cb in ?? () from /usr/lib/firefox/libxpcom_core.so
#14 0x08167fa0 in ?? ()
#15 0x00000001 in ?? ()
#16 0x00000001 in ?? ()
#17 0xb6edc554 in ?? () from /usr/lib/libnspr4.so
#18 0x08152f08 in ?? ()
#19 0x00000000 in ?? ()
.
Thread 2 (process 6995):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb764184c in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb6ecd093 in ?? () from /usr/lib/libnspr4.so
#3  0x080d8ef4 in ?? ()
#4  0x080d8e90 in ?? ()
#5  0xb49ce30c in ?? ()
#6  0xb76421b5 in pthread_getspecific ()
   from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb6ecded1 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#8  0xb73cc4c6 in ?? () from /usr/lib/firefox/libxpcom_core.so
#9  0x080d8ef0 in ?? ()
#10 0x00002710 in ?? ()
#11 0xb49ce378 in ?? ()
#12 0xb73c9c5d in ?? () from /usr/lib/firefox/libxpcom_core.so
#13 0x00000001 in ?? ()
#14 0x080d8df8 in ?? ()
#15 0x080d8e90 in ?? ()
#16 0xb73fe940 in ?? () from /usr/lib/firefox/libxpcom_core.so
#17 0x0850ea38 in ?? ()
#18 0x0850ea44 in ?? ()
#19 0xb49ce398 in ?? ()
#20 0xb73ca1cb in ?? () from /usr/lib/firefox/libxpcom_core.so
#21 0x080d8dd0 in ?? ()
#22 0x00000000 in ?? ()
.
Thread 1 (process 6993):
#0  0x08067d5b in ?? ()