Bug#377318: I just received this error on 2 machines after the recent 'gnome-control-center' update

[Dominique Brazziel]

The update was from 2.24 to 2.26.  The error displays a big box about
about 3 times when gdm is starting but before the desktop is displayed.
Attaching .xsession-errors.
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/etc/gdm/Xsession: Beginning session setup...
SESSION_MANAGER=local/asusb202:@/tmp/.ICE-unix/5052,unix/asusb202:/tmp/.ICE-unix/5052
** Message: couldn't set environment variable in session: The name org.gnome.SessionManager was not provided by any .service files
1248892690.236377 Session manager: disconnected...
Window manager warning: Failed to read saved session file /home/dbrazziel/.config/metacity/sessions/default0.ms: Failed to open file '/home/dbrazziel/.config/metacity/sessions/default0.ms': No such file or directory
GNOME_KEYRING_SOCKET=/tmp/keyring-9ppXjf/socket
SSH_AUTH_SOCK=/tmp/keyring-9ppXjf/socket.ssh
** (gnome-volume-control-applet:5633): DEBUG: Disabling debugging

** (gnome-power-manager:5632): WARNING **: This machine is not identified as a laptop.system.formfactor is desktop.

(nautilus:5619): Unique-DBus-WARNING **: Error while sending message: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

** (gnome-power-manager:5632): WARNING **: This machine is not identified as a laptop.system.formfactor is desktop.
** (gnome-power-manager:5632): DEBUG: This machine is not identified as a laptop.system.formfactor is desktop.
** (gnome-power-manager:5632): DEBUG: We are not a laptop, so not even trying

** (nautilus:5607): WARNING **: Unable to add monitor: Not supported
1248892708.009631 Session manager: disconnected...

(gnome-panel:5605): Gdk-WARNING **: /build/buildd-gtk+2.0_2.16.1-2-i386-NWxSfb/gtk+2.0-2.16.1/gdk/x11/gdkdrawable-x11.c:878 drawable is not a pixmap or window

(nautilus:5607): Gdk-WARNING **: gdk_xsettings_watch_cb(): Couldn't find window to unwatch

VNC Viewer Free Edition 4.1.1 for X - built Jan 30 2009 19:33:16
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Wed Jul 29 14:42:26 2009
 CConn:       connected to host localhost port 5902
 CConnection: Server supports RFB protocol version 3.7
 CConnection: Using RFB protocol version 3.7

Wed Jul 29 14:42:29 2009
 TXImage:     Using default colormap and visual, TrueColor, depth 24.
 CConn:       Using pixel format depth 6 (8bpp) rgb222
 CConn:       Using ZRLE encoding
 CConn:       Throughput 2807 kbit/s - changing to full colour
 CConn:       Using pixel format depth 24 (32bpp) little-endian rgb888
** (gnome-volume-control.pulse:7096): DEBUG: Disabling debugging

** (gnome-volume-control.pulse:7096): WARNING **: Unable to find stream for bar
** (gnome-volume-control.pulse:7377): DEBUG: Disabling debugging

** (gnome-volume-control.pulse:7377): WARNING **: Unable to find stream for bar
evolution-shell-Message: Killing old version of evolution-data-server...
** (evolution:10995): DEBUG: mailto URL command: evolution %s
** (evolution:10995): DEBUG: mailto URL program: evolution
evolution-shell-Message: Killing old version of evolution-data-server...