It looks like Apple released an MacBook EFI Update to version 1.4.
Apple EFI Update Version 1.4
About MacBook EFI Firmware Update 1.4
This update eliminates the noise made by the optical disk drive during system startup and wake from sleep on MacBook computers. When installation is complete, please run Software Update again, and install SuperDrive Firmware Update 3.0 (…)
by Apple
After the EFI Update and the Super Firmware Update installation, I still get the noise from the optical disc during the boot, but when the computer wake up from sleep I don´t listen that annoying sound.
Is there anyone with the same bug?
