Ooooh, if it's being written as 'It had something to do with the masters', could it be that no specific possession 'thing' has been given after it, therefore it needs no apostrophe? The same would go for masters programs... Programs is just a generalisation, not a thing, animal, etc. Therefore 'masters' wouldn't have an apostrophe.
Hi, I stayed out of this thread, because I have little to say on the matter.
The problem reminds of something that cropped up before: "writers forum" vs. "writer's forum" vs. "writers' forum".
The problem is that these all sound the same, refer to the same thing, but show different ways of looking at things. There are two dimensions:
a) plural or singular
b) possessive or plain
Intuition goes for the apostrophe, because we don't generally use plural nouns this way:
- mouse trap (not "mice trap")
- apple tree (not "apples tree")
And so on.
But there
is the "customs office", which I don't think I've ever seen written with an apostrophe.
As for the "no specific thing": I don't know. How do we decide what a "thing" is? "A mothers love" looks just wrong, yet I don't think it's any more specific than a program. What about the "office" or "clearance" if prefaced with customs? I think it's more of an idiomatic variation, but how it came to be I don't know.
It's an interesting phenomenon, but not one I know much about.