Most people I know call it OS "EX". In fact, I'm one of those people, even though I know perfectly well it's OS "Ten". OS 10 doesn't ring well with me, perhaps

Most people I know call it OS "EX". In fact, I'm one of those people, even though I know perfectly well it's OS "Ten". OS 10 doesn't ring well with me, perhaps because I never really used any of the Mac OS versions that preceeded it and feel that OS X is not from the same family (being mostly NeXT with a reworked UI).