The license agreement for Safari 3 forces you to give consent to Apple to collect “technical and related” data from your computer. It doesn’t say exactly what this data is or for how long it is kept however. This is pretty standard for a beta.
“You agree that Apple and its subsidiaries may collect and use technical and related information, including but not limited to technical information about your computer, system and application software, and peripherals, that is gathered periodically to facilitate the provision of software updates, product support and other services to you (if any) related to the Apple Software, and to verify compliance with the terms of this License. Apple may use this information, as long as it is in a form that does not personally identify you, to improve our products or to provide services or technologies to you.”
