HI
   I have same bug as you.
   After I:
   1. uninstall emacs 23;
   2. /usr/share/X11/app-defaults/Emacs
   3. delete /usr/bin/emacs, /usr/bin/emacs-23.0.60, /usr/local/bin/emacs, /usr/local/emacs-23.0.60 and so on
   Last, install emacs 23 again
  
   so I think it is because I have install old version before I install emacs 23.

Good Luck!
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