iPhone 4 volume buttons reversed

Are the workers at Foxconn having the last laugh, or is it the deceased spirits who are being cheeky? It seems that the iPhone 4 hasn’t gotten off to a very good start with problems plaguing the smartphone. There is also news that at least one unit has reversed volume buttons, which basically means the ‘–’ increases the volume, while the ‘+’ goes the other way round. This is most probably a manufacturing defect and a one-off problem, so there really shouldn’t be any reason to fret further.