Hi all, I have an agent running for each user session that gets launched when the user logs in and will be terminated on a logout. In order to have the background agent running even if the user quits it I use the key to KeepAlive (I check the reason for the quit event and return 0 or 1). Everything works fine when only one user is logged in and out. But when I log out from a fast user switching it will be restarted: He agent fist received the quit event and will terminate by calling exit(1) at the very end. Unfortunately, it will be relaunched during the user logout and the process will immediately receive SIGTERM signal that I also response to. <plist version="1.0"> <dict> <key>KeepAlive</key> <dict> <key>SuccessfulExit</key> <true/> </dict> <key>Label</key> <string>com.mycompany.myAgent</string> <key>OnDemand</key> <false/> <key>ProgramArguments</key> <array> <string>/usr/local/MyStuff/MyAgent.app/Contents/MacOS/ MyAgent</string> </array> <key>RunAtLoad</key> <true/> </dict> </plist> Is there anything I am missing or doing wrong? Thanks for any help, Peter