Thanks to Pierre-Antoine for this info.
According to a reader from
Macintouch, Apple is exchanging the motherboard (MLB) of MB Pro that have been sent to AppleCare. This new MLB sports the same feature while lacking the famous whining noise; But Mac OS X.4.6 is required.
To prove this information, hereafter is a letter sent by AppleCare together with the repaired hardware:

Apple has most likely revised the tension/clock of the MLB that is suspected to be responsible for the annoying whining & Co noises.
Modifying the frequency of the MLB could also be the proof of an updated MLB that will be used in the Merom/Core 2 Duo-based MB Pro.
Thanks to MS to report that HP has released without much emphasis new drivers for most of its current printer models. Those new drivers are in Universal Binary and adds additional features especially for All-In-One series when compared to HP generic drivers provided by Apple.
To identify the driver you need for your HP printer enter references at the following address:
http://welcome.hp.com/country/us/en/support.html
AOL has been experiencing financial difficulties for many years due to the dissatisfaction of its customers. The majority of it's European subsidiaries are being sold off.
In an effort to regain its lead in the United States, AOL is going to offer its service free to broadband users. But dial-up customers will have to continue to pay for the service.
So, AOL will now be attempting to generate its income through advertising. The risk is high, but most likely less than if it didn't try anything and simply died out.