Ars Technica reports on a class-action lawsuit filed against Apple about the ease with which children could make in-app purchases of add-ons for programs within the 15-minute window after an iTunes password was entered to install or update an app. iOS 4.3 added a separate in-app password requirement. follow link
Customize Open/Save Dialog Sidebars
You can customize the sidebar in an Open/Save dialog the same way you can in a Finder window: you can reorder the position of items, drag them off into puff-of-smoke oblivion, and even drag a folder from the dialog's list into the sidebar.
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Apple Faces In-App Purchase Class-Action Lawsuit