You must be new to apple products: launchd had problems running scheduled tasks for years, people resorted to installing anacron, when the Cisco VPS connection

You must be new to apple products: launchd had problems running scheduled tasks for years, people resorted to installing anacron, when the Cisco VPS connection was released in snow leopard it was utterly broken, the first iteration of time capsule had thermal problems, most of those units are probably dead by now.