launchd problems?

Does your console log look much like

Oct  8 22:23:56 MyComputer com.apple.launchd[210] (com.company.app.task): Throttling respawn: Will start in 10 seconds
Oct  8 22:24:02 MyComputer com.apple.launchd[1] (com.company.app.task)[39664]): posix_spawnp("/Library/Vendor/Folder/task", ...): No such file or directory
Oct  8 22:24:02 MyComputer com.apple.launchd[1] (com.company.app.task)[39664]): Exited with exit code: 1
Oct  8 22:24:02 Halloumi com.apple.launchd[1] (com.company.app.task): Throttling respawn: Will start in 10 seconds

then chances are you’ve installed software and deleted it again. We all do from time to time, some more frequent than other. This can be quite annoying when debugging a problem, as well as fill up space and drown more important messages. launchd is the cron of OS X, but you won’t find /etc/launchd.conf. Instead, look in /Library/LaunchAgents and ~/Library/LaunchAgents and you’ll find the ones that started the problem