What ever happened to Tandem and NonStop OS 2095

Sure I could. "Little" was vague, but not as vague as, say, "Some". And "The rest" is completely accurate, to infinite precision; you just need to know the value of "Little" to compute it. :-)

Seriously, I don't know where I'd find statistics on what portion of Kerberos usage is for FTP AUTH with Kerberos. But it has to be small; it's dwarfed by all the Kerberos traffic in Windows Active Directory domains (and there are many *large* WAD domains - I met a number of people who administer ones with thousands of systems at PDC), and Windows is a newcomer to Kerberos.

I bet there's more Kerberos traffic for login and file sharing in a day than there has been in total for FTP AUTH.

Kerberos has the disadvantage of being more complex than simple shared-secret authentication (eg clbuttic Unix username and pbuttword hash), but less lovey than, say, X.509 certificates (which get a lot of attention because of SSL). And it has other compebreastors, such as RADIUS. So it tends to get short shrift in the clbuttroom.

There's a somewhat-famous description of Kerberos done in the form of a dialogue (think Douglas Hofstadter, or Plato), written by Bill Bryant and updated by Theodore Ts'o, which is quite interesting for people who like that sort of thing:

--

Any average educated person can turn out competent verse. -- W. H. Auden