For occur defined standard key binding - 'M-s o'.
--- a/.emacs-my Wed Jun 30 17:12:43 2010 +0300
+++ b/.emacs-my Tue Jul 13 11:26:33 2010 +0300
@@ -251,7 +251,7 @@
(append my-text-mode-hook-list my-devel-mode-hook-list my-scroll-margin-mode-hook-list) )
;; ----------------------------------------------------------------------
-;; searching.
+;; search, isearch, occur.
(setq case-fold-search t)
@@ -259,10 +259,6 @@
(setq search-highlight t) ; highlight incremental search
;; ----------------------------------------------------------------------
-;; *Occur*
-(global-set-key [f7] 'occur) ; Key binding as in mc
-
-;; ----------------------------------------------------------------------
;; grep, find.
;; Assume that we have GNU grep, so -H available.