Hi, With a new MacPorts installation I also installed X11 through it. After some initial problems which got fixed by Jeremy Huddleston X11 worked fine except for one problem. Shortly after starting X11.app the CPU load climbs up to 110%-160% according to top and Activity Monitor. I described the problem first on the MacPorts development list and Jeremy Huddleston asked me to describe it here. The problem sounds exactly like described in http://lists.macosforge.org/pipermail/xquartz-dev/2009-January/001952.html http://lists.macosforge.org/pipermail/xquartz-dev/2009-January/002042.html http://lists.macosforge.org/pipermail/xquartz-dev/2009-January/002044.html except that I'm running 10.4. I hope you have any ideas what can be done to solve this issue. At the moment I'm back to the default X11 installation :-/ Thanks for your help, Simon -- + privacy is necessary + using http://gnupg.org + public key id: 0x6115F804EFB33229