Apple has postponed the announced date when all Mac App Store applications must be sandboxed, from November 2011 to March 2012. Maybe that's because sandboxing isn't working either for Apple or for developers. Developer Wil Shipley ruminates on why requiring application sandboxing is the wrong strategy for Apple. follow link
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Multi-Monitor iChat in Snow Leopard
In Snow Leopard, on a multiple-monitor system where you're using screen sharing over iChat, dragging the tiny inset preview of your own screen to another monitor shifts the remote screen to that monitor.
Sandbox or Catbox?