Bug#557934: gnome-session: metacity doesn't start anymore

[Christoph Hellwig]

Package: gnome-session
Version: 2.26.2-1
Severity: important

After upgrading gnome bits from 2.6.26 to 2.6.28 metacity isn't started anymore
when logging into a gnome session.  I can start it manually from a shell,
but it requires the --replace option as it claims another window manager is
already running, but ps output doesn't show any.

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-rc8 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/bash

Versions of packages gnome-session depends on:
ii  compiz-gnome                  0.8.2-6    OpenGL window and compositing mana
ii  gnome-panel                   2.26.3-1   launcher and docking facility for 
ii  gnome-session-bin             2.26.2-1   The GNOME Session Manager - Minima
ii  gnome-settings-daemon         2.26.1-2   daemon handling the GNOME session 
ii  metacity                      1:2.28.0-2 lightweight GTK+ window manager

gnome-session recommends no packages.

Versions of packages gnome-session suggests:
ii  desktop-base                  5.0.5      common files for the Debian Deskto
ii  gnome-keyring                 2.28.1-1   GNOME keyring services (daemon and
ii  gnome-user-guide [gnome2-user 2.28.0-1   GNOME user's guide

-- no debconf information