Where are the downloaded iPhone applications, and what format are they in?

During the last 4 months Apple has been pretty tight lipped about just about everything involving the App Store. So I’ve done my best to guess how things will end up. One thing I guessed wrong about is that applications would be encrypted. They arent.
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How much is that application

While browsing the app store I came across this quirk in pricing.

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Does Epocrates run in the background?

While playing around with the final 2.0 I noticed that lots of apps appear to be doing network activity that don’t really have a network component, so I fired up a packet sniffer, dropped the phone into Airplane mode, and then enabled the wireless to force all network traffic out a router that I could sniff.

Some interesting surprises about Epocrates Rx.

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Apple just gave out my Apple ID password because someone asked – MK&C

As much as I love the idea of MobileMe, this nightmare is why I will never use it.
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Wandering Polygon Walkthrough Part 2

Second part of walking through the WanderingPolygon screen saver to understand how to make screensavers work across multiple monitors in a cooperative manner.

The WanderingPloygon.[h,m] source represents the state of the drawing, composed of the current color, the vertices of the polygon, and the current velocity vector of each vertices expressed as an x and y delta to apply for each frame of the animation.

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