Does the spec sheet have
inaccurate decibel and watts information provided, such that the drive being purchased has
inappropriate noise (decibels) and thermal (watts used) properties when compared to the specifications printed for those specific properties? Or has everyone been taking for granted that '5400 rpm' is a shortcut for 'cool and quiet' and is just now realizing that they should have been reading the actual 'cool' and 'quiet' specifications instead of using search keyword '5400' to stand in for that diligence?
I think Western Digital just made a year's worth of profits off of people who don't read spec sheets, and they have a plausible interpretation that would unfortunately will probably survive a court challenge. Western Digital has clearly taken the position that '5400 RPM' has always been a statement of disk I/O performance, never a statement about other characteristics, and so by saying '5400 RPM Class' they only mean the drive's I/O performance, not any of those other secondary characteristics that led to the uproar we're discussing.
Western Digital is in the wrong here — not for repricing 'cool and quiet' drives, but for communication — and should have just openly said:
"We're ending production of quiet-cool 5400 RPM drives in our consumer product lines. If cost is of most concern to your installation, our consumer products will continue to meet your needs. If heat and noise are of most concern to your installation, our professional products with WhisperDrive(tm) will continue to meet your needs."
EDIT: I also think WD should be publishing thermal characteristics, not just "watts used".