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Thread 3 (process 5432):
#0  0xb7f73410 in __kernel_vsyscall ()
#1  0xb7de36f3 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7e81c29 in PR_Poll () from /usr/lib/libnspr4.so
#3  0xb5f126cb in ?? () from /usr/lib/firefox/components/libnecko.so
#4  0x0864e710 in ?? ()
#5  0x00000001 in ?? ()
#6  0xffffffff in ?? ()
#7  0xb5f121ac in ?? () from /usr/lib/firefox/components/libnecko.so
#8  0x0864e228 in ?? ()
#9  0x00000001 in ?? ()
#10 0x353074c9 in ?? ()
#11 0xb5fa128c in ?? () from /usr/lib/firefox/components/libnecko.so
#12 0xffffffff in ?? ()
#13 0xffffffff in ?? ()
#14 0xb5e61378 in ?? ()
#15 0xb5f12f02 in ?? () from /usr/lib/firefox/components/libnecko.so
#16 0x0864e228 in ?? ()
#17 0xb5e61368 in ?? ()
#18 0x00000001 in ?? ()
#19 0xb7e7020f in PR_SetThreadPrivate () from /usr/lib/libnspr4.so
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
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Thread 2 (process 5477):
#0  0xb7f73410 in __kernel_vsyscall ()
#1  0xb701d84c in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7df9c84 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e7f093 in ?? () from /usr/lib/libnspr4.so
#4  0x0859e534 in ?? ()
#5  0x0859e4d0 in ?? ()
#6  0xb4b5a30c in ?? ()
#7  0xb701e1b5 in pthread_getspecific ()
   from /lib/tls/i686/cmov/libpthread.so.0
#8  0xb7e7fed1 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#9  0xb6efc4c6 in ?? () from /usr/lib/firefox/libxpcom_core.so
#10 0x0859e530 in ?? ()
#11 0x000007cf in ?? ()
#12 0xb4b5a378 in ?? ()
#13 0xb6ef9c5d in ?? () from /usr/lib/firefox/libxpcom_core.so
#14 0x00000001 in ?? ()
#15 0x0859e438 in ?? ()
#16 0x0859e4d0 in ?? ()
#17 0xb6f2e940 in ?? () from /usr/lib/firefox/libxpcom_core.so
#18 0x089958b8 in ?? ()
#19 0x089958c4 in ?? ()
#20 0xb4b5a398 in ?? ()
#21 0xb6efa1cb in ?? () from /usr/lib/firefox/libxpcom_core.so
#22 0x0859e410 in ?? ()
#23 0x00000000 in ?? ()
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Thread 1 (process 5355):
#0  0xb7f73410 in __kernel_vsyscall ()
#1  0xb7d47df0 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7ead2c6 in ?? () from /usr/lib/firefox/libgtkembedmoz.so
#3  0x0000000b in ?? ()
#4  0xbfa37d9c in ?? ()
#5  0x00000000 in ?? ()