Hello I understand that this is not an apple way to respond about obsolete versions of their software. But i am hoping some of launchd developers look through this list, and who are aware of pecularities of their child :) i am trying to launch an agent programmatically (not only automatically when the system is started), but in a certain moment. I mean, a user installs an application, and he is happy having an agent run as soon as an app is installed. as i've been told on this list some time ago, it can be done only by exec'ing "launchctl -w load [plist file path]", as long as OS X does not provide any explicit ways to communicate to per user launchd service and ask it to process a plist file. I assume that launchd "interface" could be retrieved by reading sources of launchctl (i've heard they are available), but my qualification doesnt allow me to do that so far. The problem i've run into was launchctl and launchd acting differently on different versions of OS X, partly because launchctl changed the way it searches for the right launchd instance (so i've been told on this list) from the per-bootstrap to per-user, In archives i found some ways of "talking" to the right instance of launchd - like, specifying "-S" parameter, or using "bslist" param. They seem to work differently not only on OS X 10.5 and 10.6, but even inside 10.5 builds (for example, while on 10.5.6 sudo launchctl load -w myagent.plist launches an agent, on 10.5.4 users get "Socket not connected"). Could you please explain, how to 'talk' to the right launchd and what is the difference in the way of 'talking' in different versions of OS X? Thanx