Idle Processor Noise
The MacBook is victim to the high pitched noise generated by the processor, known as the 'CPU whine'
This occurs only when the CPU is idle
Disabling the second core of the processor or running a program that prevents the processors from being idle will eliminate this sound (like PhotoBooth).
This has also been observed on the MacBook Pro, as well as other Core Duo based PC laptops.
Unlike the Macbook Pro, Apple has yet to recognize this issue.
That's exactly what i got!!!
I tried the PhotoBooth trick and the noise stoped!!!!
Thx!
But i did not have that BEFORE the efi firmware update ....
😱
Can you post a link with the standard "remove battery" and do a "P-Ram-Reset" routine.
I installed this the first day it was out and have seen no problems. I seem to be running around 3 degrees celsius cooler, and openoffice (uses x11) is working properly again.
Not bad. 🙂
Always had problems with scheduled backups to iDisk not taking place overnight.
This morning -- perfect!
Hope it's not just a one-off coincidence.