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)
Disable Caps Lock
If you find yourself pressing the Caps Lock key accidentally as much as I do, note that you can disable it entirely in Mac OS X. Open the Keyboard & Mouse preference pane, click the Modifier Keys button, and in the dialog that appears, select No Action from the Caps Lock pop-up menu. You could remap it to another modifier instead, but that might make using differently configured Macs more difficult.