Hi, I have tried it on my ppc and it seems to work fine. I see this one issue, I think I saw it before. reboot login as user foo fire-up a Terminal window $ xlsclients $ su - bar $ rm .Xauthority $ DISPLAY=:0 xlogo The xlogo window pops-up even though I have the authenticate option set in the preferences. It should not be possible for another user to do that on the same machine unless they know the magic cookie. If I do 'xauth list' I see that cookies never seem to be created for me. Thanks again for the hard work. mzs PS: For a bit now selection in gvim has seemed a bit slower in particular when I am X11 forwarding via ssh but that is just a feeling I have never timed it before. It always seemed instantaneous and now there is the slightest pause. It may be because of something I have did in gvim though, I am using a newer gvim version recently too.