According to Daily Tech, Apple has now released 3 revisions of the MacBook Pro hardware. The latter having no known issues.
I am glad my order took so long and was BTO as I have W8612, the latest known version. I still think there are wifi issues with speed, reconnecting and very hot temperature issues however, but no whine.
You can check your serial # by choosing About This Mac and clicking on the “10.4.x” area twice (once to show the build of OS X, then the serial #)