Apple released a software upgrade is Mac mini computers and optical disk drive SuperDrive, used in Mac mini and iMac.
According to the company, updates Mac mini EFI Firmware Update 1.2 improves compatibility with new sets of computer memory modules Apple. You can download it from this page. File size - 2,4 MB. After downloading and installing the application-updater, you must run it (/ Applications / Utilities / Mac mini EFI Firmware Update.app) and follow the on-screen instructions.
Update SuperDrive Firmware Update 3.0 fixes Noise drives SuperDrive during power system and its withdrawal from the state of sleep. Update compatible with the iMac EFI Firmware Update 1.4 and the Mac mini EFI Firmware Update 1.2. After the download (18,3 MB) and installation, you must start the application / Applications / Utilities / SuperDrive Update.app and follow the instructions.
One reason for the appearance of an update, perhaps, is a technology out of the state of sleep on demand (Wake on Demand), debuts in Snow Leopard. With its use of computer in sleep mode, periodically from it goes to register with Bonjour Sleep Proxy, with the sound coming from your drive, could well lead to dissatisfaction of users.