sorry i forgot this: Linux debian 3.2.0-4-686-pae #1 SMP Debian 3.2.68-1+deb7u5 i686 GNU/Linux is it a bug of july 2015 and iceweasel 38.0 ? a known security bugs ? what does stackwalker.cc exactly do at the system? i never saw a root shell crashing...really cracy !