The "emacs-linum-mode" AUR package [1] appears to be unnecessary with
the introduction of linum-mode in emacs 23.1 and thus should be deleted.
bzr://bzr.savannah.gnu.org/emacs/trunk/etc/NEWS.23:
...
* New Modes and Packages in Emacs 23.1
...
** linum.el is a new minor mode to display line numbers for the
current buffer.
...
http://web.student.tuwien.ac.at/~e0225855/linum/linum.el:
;;; linum.el --- Display line numbers to the left of buffers
;; Copyright (C) 2007, 2008 Markus Triska
;; Author: Markus Triska