I did the extremeRate purple shell swap, AMA
I did the extremeRate purple shell swap, AMA
I don't know how statistically prevalent it is, and where you'd get it varies. Sounds great that you don't have to deal with it either before or after.
For me initially it was around the usb port when I press down on it. Nowadays, I get it when I do a twisty motion with both hands while holding it, but I've had it for well over a year, and it has experienced a couple of bumpy falls in the meantime.