So I have a mac pro and Powerbook on the same network at work and I am unable to display windows from the remote x-server (MacPro) onto the Powerbook (or vise versa). Example... On Powerbook from the terminal bash xhost + ssh -Y me@macpro... xclock & (my simple test that x-windows is really working or not...) I can log in fine, but it complains that it can't "Open the display." after the "xclock &" command. I have tried lots of combinations of SSH -Y, SSH -X, xhost-ing, export DISPLAY=:0.0 etc., but I haven't struck gold. I've always been able to get this sorted out between two machines, but never when they were both macs. Any thoughts? The network connection is fine. SSH/SCP work fine. AFP works fine. I know what I'm doing...more or less...but the terminal genies aren't cooperating. Any help out there? Step by step is fine with me!