org-mode is not loaded

Binary package hint: org-mode

When I am trying to use org-mode (eg by opening a file with .org extension, using the agenda, etc) I get the following error message in Emacs:

Autoloading failed to define function org-mode

(using the development version of org-mode works just fine, by the way).

I am using karmic (latest), with

$ apt-cache policy emacs-snapshot org-mode
emacs-snapshot:
  Installed: 1:20090320-1ubuntu1
  Candidate: 1:20090320-1ubuntu1
  Version table:
 *** 1:20090320-1ubuntu1 0
        500 http://at.archive.ubuntu.com karmic/universe Packages
        100 /var/lib/dpkg/status
org-mode:
  Installed: 6.27a-1
  Candidate: 6.27a-1
  Version table:
 *** 6.27a-1 0
        500 http://at.archive.ubuntu.com karmic/universe Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
Architecture: i386
Date: Sat Sep 19 18:17:55 2009
DistroRelease: Ubuntu 9.10
Package: org-mode 6.27a-1
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/usr/bin/zsh
ProcVersionSignature: Ubuntu 2.6.31-10.34-generic
SourcePackage: org-mode
Uname: Linux 2.6.31-10-generic i686