If your getting annoyed by that, what do you think of people calling Mac OS Ten point five, leopard, the X is more recognisable than the word 10, plus it sounds much more snazzy saying Mac OS X, than saying Mac OS 10, also how do you know if this is the right way to say this, it's a matter of opinion that it should be said as 10, i know it's Roman numerals, but what if apple intended for it to be pronounced as 'X' rather than 10, if apple wanted people to say Mac OS '10' they would have called it that, but as i said earlier 'X' sounds much people snazzy