First off this is not a serious problem, more a failure and solution analysis out of interest. If you enjoy this kind of thing feel free to participate I kept getting these in my syslog: com.apple.launchd.peruser.502 (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self I have since fixed the issue by following this tip: http://www.insanelymac.com/forum/index.php?showtopic=192563 however i put the apple.com.ReportCrash.Self.plist from /System/Library/LaunchAgents to /Library/LaunchAgents and NOT as described to the <user>/Library/LaunchAgents so it would work globally and for new users as well. The messages have since left completely, after a single time getting com.apple.launchctl.Aqua com.apple.ReportCrash.Self: Already loaded this happened when the file existed at both locations (in /System/Library/LaunchAgents and /Library/LaunchAgents) All of these messages appeared only after system startups. My question is what difference it makes for these files whether they reside in /System/Library/LaunchAgents or /Library/LaunchAgents? And of course: What would be the most natural solution for this problem?