[launchd-dev] Facing problem with launch daemon on logout

Hi, I have created a launch daemon process. I can start the process using: launchctl load <plistfile> But when I log out, this daemon is getting killed and I see the log message in the console as: com.apple.launchd : (<process name>) Exited with code : 143 When we logout, only launch agent process should be stopped. But why is the daemon process exiting or getting stopped? This issue iam facing only with Mac 10.7 (Lion). In Mac 10.5 and 10.6 daemon process keeps running even after logout. Any help for this is highly appreciated. Thanks