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Dr. Drang, at the end of this post about killing apps in the multitasking switcher:

There’s another bit of iOS voodoo floating around that I’d like to see Fraser tackle: recalibrating your home button. My gut feeling is that this, too, is a waste of time.

I tried the “recalibration” procedure a few times on my iPhone 4 and iPad 2, both of which slowly developed unreliable home buttons.¹

It seemed to help for a few minutes the first time, but later attempts showed no improvement, so the first time was probably just coincidental. I think it’s safe to say that recalibrating iPhone or iPad home buttons is a myth.

Anyone have any solid knowledge to the contrary? (If an Apple “Genius” told you, that’s not good enough.)

Update: I’ve received numerous reports, some from current and former Apple employees, that “recalibration” is indeed bullshit. Grant Paul even reverse-engineered the OS routine being invoked by the extreme long-press and confirmed that it only force-quits the current app. Nothing more.