[Bug-AUCTeX] Loading AUCTeX overrides my .emacs TeX/LaTeX customization

[Daniele Tampieri]

Hello,
       I recently installed AUCTeX on my Kubuntu distributions, but
soon I found out
It overrides the few customization (actually only one) commands for TeX/LaTeX.
Precisely, my only customization relating to TeX/LaTeX in . emacs is

(defun tex-line-comment-box ()
  "Insert a %, followed by a string of asterisks."
  (interactive)
  (insert 
"%********************************************************************\n")
)

(add-hook 'tex-mode-hook
  '(lambda ()
     (define-key tex-mode-map "\C-cl" 'tex-line-comment-box)
   )
)

When I enter the AUCTeX mode and type \C-c l emacs says: "C-c l is undefined".
Can you help me?

Best regards
Daniele Taampieri