Manufacturing flaws in early production happen to everyone sometimes. The company previously known as RIM has the resources to iron out the process for the next batch. The instability was likely caused by the defect so a proper review was not possible. It's still embarrassing as hell.
Have the afflicted tried the IT Crowd solution: Have you tried turning it off and on again?
A couple of times, over years and different iPhones, I came across similar behavior which power cycling fixed. Could have been any random combination of OS behavior and apps, but nothing frequent or predictable.