Apple just released two firmware updates: one addressing Bluetooth issues and one addressing disconcerting noises and system slowdowns in MacBook Pros with 7200RPM internal hard drives. Both updates can be downloaded directly from Apple, or by running your Mac’s Software Update application. You can launch Software Update by clicking on the Apple icon in the upper left corner of your Mac’s screen, then browsing down the list to “Software Update.” Firmware Details from Apple:
Hard Drive Firmware Update 2.0
MacBook Pro Hard Drive Firmware Update 2.0 reduces certain infrequent noises made by 7200-rpm drives. These drives shipped with the June 2009 MacBook Pro.
To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/Hard Drive Update.app). The updater will launch automatically when the installation is complete.
Click here to download the hard drive firmware directly from Apple.com. New Hard Drive firmware will be: 0007APM2
Bluetooth Firmware Update 2.0.1
This update provides bug fixes and better compatibility with the Apple Wireless Mighty Mouse and Apple Wireless Keyboard. It installs on all Macintosh systems with Bluetooth based on the Broadcom chipset.