.
Hilo 2 (Thread 1820):
#0  0x00900416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00626897 in syscall () from /lib/libc.so.6
No symbol table info available.
#2  0x013f5598 in epoll_wait () from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#3  0x013f514c in ?? () from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#4  0x013ef1fe in event_base_loop () from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#5  0x0141f462 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*)
    () from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#6  0x0140098a in MessageLoop::RunInternal() ()
   from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#7  0x014009ae in MessageLoop::RunHandler() ()
   from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#8  0x01400a25 in ?? () from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#9  0x00b05843 in XRE_InitChildProcess ()
   from /usr/lib/firefox-3.6.8/libxul.so
No symbol table info available.
#10 0x00242707 in ?? ()
No symbol table info available.
#11 0x00570ce7 in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#12 0x002425c1 in ?? ()
No symbol table info available.
.
Hilo 1 (Thread 1821):
#0  0x006b57e2 in ?? () from /lib/libc.so.6
No symbol table info available.
#1  0x00000000 in ?? ()
No symbol table info available.