Apple has released MacBook Pro EFI Firmware Update 2.8, which specifically targets 15-inch models released in late 2008. This update resolves a graphics issue that may cause the internal display to flicker. To ensure you get the firmware update only if it’s necessary, we recommend relying on Software Update; if the update doesn’t appear for you, it’s not appropriate for your Mac. (Free, 1.8 MB)
How to Make an iPhone Screenshot
Want to take a screenshot of something on your iPhone or iPod touch? Press the Home button and Power button briefly at the same time, and an image of your screen will be saved to the Photos app (and will sync with iPhoto when you next connect). Don't hold the buttons too long or your device will either power down or reboot.