Jeremy, I got the message "The application X11 quit unexpectedly and my logfiles gives me as follows 24.07.09 12:08:17 com.apple.launchd[190] ([0x0-0x3e23e2].org.x.X11[28220]) Exited with exit code: 1 24.07.09 12:09:21 [0x0-0x3e43e4].org.x.X11[28239] dyld: Library not loaded: /Applications/Utilities/X11.app/Contents/Frameworks/Sparkle.framework/Versions/A/Sparkle 24.07.09 12:09:21 [0x0-0x3e43e4].org.x.X11[28239] Referenced from: /Applications/Utilities/X11.app/Contents/MacOS/X11.bin 24.07.09 12:09:21 [0x0-0x3e43e4].org.x.X11[28239] Reason: image not found 24.07.09 12:09:21 ReportCrash[28250] Symbolication warning: Unable to locate CIE at 0x6a64132b = 0x00000008 - (0x959becd9 + 4) 24.07.09 12:09:21 ReportCrash[28250] Symbolication warning: error parsing FDE at 0x00199700 in: __TEXT [0x00000000 - 0x001d8000) __eh_frame [0x001996f8 - 0x001c9de0) /usr/libexec/oah/translate 24.07.09 12:09:21 com.apple.launchd[190] ([0x0-0x3e43e4].org.x.X11[28239]) Exited abnormally: Trace/BPT trap I just noticed that the X11.bin was significantly smaller in size than any previous versions. christof