When ssh-ing to a computer in my small LAN as a normal user and using X applications, such as emacs, everything works OK. Howver, with su to root on the remote box X is refused: Connection lost to X server`host:11.0'
Is the solution to be found with the X server or ssh/sshd? X11Forwarding is enabled and Rootlogin disabled in the remote sshd and X11Forwarding enable on the local ssh. X has been working before, so probably some config files have changed recently (I'm running sid/unstable). Openssh versions are 2.9p2.