.
Thread 3 (process 6722):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7795823 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7dfec29 in PR_Poll () from /usr/lib/libnspr4.so
#3  0xb5fe76db in ?? () from /usr/lib/firefox/components/libnecko.so
#4  0x081268a8 in ?? ()
#5  0x00000001 in ?? ()
#6  0xffffffff in ?? ()
#7  0xb7e024b8 in PR_GetCurrentThread () from /usr/lib/libnspr4.so
#8  0xb5fe7f15 in ?? () from /usr/lib/firefox/components/libnecko.so
#9  0x081263c0 in ?? ()
#10 0xb5a29368 in ?? ()
#11 0xb5a29358 in ?? ()
#12 0xb7ded20f in PR_SetThreadPrivate () from /usr/lib/libnspr4.so
#13 0xb7e9e1cb in ?? () from /usr/lib/firefox/libxpcom_core.so
#14 0x081263c0 in ?? ()
#15 0x00000001 in ?? ()
#16 0x00000001 in ?? ()
#17 0xb7e0b554 in ?? () from /usr/lib/libnspr4.so
#18 0x08126b30 in ?? ()
#19 0x00000000 in ?? ()
.
Thread 2 (process 6723):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7dce84c in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7dfc093 in ?? () from /usr/lib/libnspr4.so
#3  0x080836fc in ?? ()
#4  0x080838b8 in ?? ()
#5  0xb522830c in ?? ()
#6  0xb7dcf1b5 in pthread_getspecific ()
   from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb7dfced1 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#8  0xb7ea04c6 in ?? () from /usr/lib/firefox/libxpcom_core.so
#9  0x080836f8 in ?? ()
#10 0x0000136d in ?? ()
#11 0xb5228378 in ?? ()
#12 0xb7e9dc5d in ?? () from /usr/lib/firefox/libxpcom_core.so
#13 0x00000001 in ?? ()
#14 0x08083990 in ?? ()
#15 0x080838b8 in ?? ()
#16 0xb7ed2940 in ?? () from /usr/lib/firefox/libxpcom_core.so
#17 0x0813f270 in ?? ()
#18 0x0813f27c in ?? ()
#19 0xb5228398 in ?? ()
#20 0xb7e9e1cb in ?? () from /usr/lib/firefox/libxpcom_core.so
#21 0x08083968 in ?? ()
#22 0x00000000 in ?? ()
.
Thread 1 (process 6668):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7dd24f1 in raise () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x08057836 in ?? ()
#3  0x0000000b in ?? ()
#4  0xbfe1904c in ?? ()
#5  0x00000000 in ?? ()