I comment out some lines in the (custom-set-faces) part of my .emacs
file.
My comments got deleted the next time I entered the wonderful menu
driven customization system.
Therefore, the warning
;; custom-set-faces was added by Custom -- don't edit or cut/paste it!
;; Your init file should contain only one such instance.
should be revised to
;; custom-set-faces was added by Custom -- don't edit or cut/paste it!
;; Your init file should contain only one such instance.
;; Place all comments outside this section or else they will
;; likely be deleted!