That new MacBook Pro's 7200 RPM HDD singing you too many ballads lately? As promised, Apple today released a new firmware update to silence that troublemaker. If it doesn't come up through automatic system update, you can obtain Hard Drive Firmware Update 2.0 (catchy name, eh?) via the read link. Admit it, you're gonna feel just a teensy bit lonelier once your laptop stops chirping so much.
Update: Apple today also released Bluetooth Firmware Update 2.0.1, which alongside various bug fixes improves compatibility with the company's wireless mouse and keyboards on all machines with the Broadcom chipset -- that includes all unibody laptops and any Mac released in 2009.