#0  0x0491dcde in js_NextActiveContext ()
   from /usr/lib/xulrunner-1.9.1.8/libmozjs.so
No symbol table info available.
#1  0x02d2a1f7 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
No symbol table info available.
#2  0x05b99a81 in ?? () from /usr/lib/firefox-3.6/libnspr4.so
No symbol table info available.
#3  0x0037196e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#4  0x005ea9de in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.