Comment 1 for bug 449729

I can confirm this. While running updates this morning for Karmic I noticed this odd error i the Terminal.
apt-get update && apt-get upgrade

Setting up emacs23-common (23.1+1-4ubuntu2) ...
Ignoring install-info called from maintainer script
The package emacs23-common should be rebuild with new debhelper to get trigger support
Ignoring install-info called from maintainer script
The package emacs23-common should be rebuild with new debhelper to get trigger support
Ignoring install-info called from maintainer script
The package emacs23-common should be rebuild with new debhelper to get trigger support

Ignoring install-info called from maintainer script
The package emacs23-common should be rebuild with new debhelper to get trigger support

Setting up emacs23-bin-common (23.1+1-4ubuntu2) ...

Setting up emacs23 (23.1+1-4ubuntu2) ...
emacs-install emacs23
install/dictionaries-common: Byte-compiling for emacsen flavour emacs23
Wrote /usr/share/emacs23/site-lisp/dictionaries-common/debian-ispell.elc
Wrote /usr/share/emacs23/site-lisp/dictionaries-common/ispell.elc
Wrote /usr/share/emacs23/site-lisp/dictionaries-common/flyspell.elc
emacsen-common: Handling install of emacsen flavor emacs23
emacsen-common: byte-compiling for emacs23
Wrote /etc/emacs23/site-start.d/00debian-vars.elc

In debian-run-directories:
debian-startup.el:131:25:Warning: `mapcar' called for effect; use `mapc' or
    `dolist' instead
Wrote /usr/share/emacs23/site-lisp/debian-startup.elc
install/gtk-doc-tools: Handling install for emacsen flavor emacs23
Loading 00debian-vars...
No /etc/mailname. Reverting to default...
Loading /etc/emacs/site-start.d/50autoconf.el (source)...
Loading /etc/emacs/site-start.d/50dictionaries-common.el (source)...
Loading debian-ispell...
Loading /var/cache/dictionaries-common/emacsen-ispell-default.el (source)...
Loading /var/cache/dictionaries-common/emacsen-ispell-dicts.el (source)...
Loading /etc/emacs/site-start.d/50git-core.el (source)...
Loading /etc/emacs/site-start.d/50gtk-doc-tools.el (source)...
Wrote /usr/share/emacs23/site-lisp/gtk-doc-tools/gtk-doc.elc