RE: Release update

[Drew Adams]

> > Sad to say, I spoke too soon. I see the problem again this morning,
> > exactly as I described it before.
> > 
> > And repeating the operation - uncheck the box, open & close Emacs
> > 23, close the box - doesn't seem to fix it (at first, I thought it
> > did).
> 
> You probably have to delete all fontconfig cache files.

Can you tell where to do that? I'm on MS Windows - where do these files reside?
Are they only for Emacs? (Searching for `cache', `fontconfig', and `font-config'
turns up nothing in the Elisp manual.)