Public bug reported:

This warning appears in .xsession-errors, while using System
Settings.../Network (closing the window):

WARN  2012-01-14 20:57:39 glib <unknown>:0 Unable to fetch children:
Method "Children" with signature "" on interface "org.ayatana.bamf.view"
doesn't exist

While this is the output from dbus-monitor "sender='org.ayatana.bamf'"
leading up to it:

signal sender=:1.44 -> dest=(null destination) serial=2902 
path=/org/ayatana/bamf/window56623107; interface=org.ayatana.bamf.view; 
member=NameChanged
   string "System Settings"
   string "Network"
method return sender=:1.44 -> dest=:1.40 reply_serial=1629
   string "/org/ayatana/bamf/window56623107"
method return sender=:1.44 -> dest=:1.40 reply_serial=1630
   uint32 0
method return sender=:1.44 -> dest=:1.40 reply_serial=1631
   string "/org/ayatana/bamf/application570171121"
method return sender=:1.44 -> dest=:1.59 reply_serial=475
   string "/org/ayatana/bamf/window56623107"
method return sender=:1.44 -> dest=:1.59 reply_serial=476
   uint32 0
method return sender=:1.44 -> dest=:1.59 reply_serial=477
   string ""
method return sender=:1.44 -> dest=:1.40 reply_serial=1632
   array [
      string "/org/ayatana/bamf/window58720475"
   ]
method return sender=:1.44 -> dest=:1.40 reply_serial=1633
   array [
      string "/org/ayatana/bamf/window48240889"
      string "/org/ayatana/bamf/window48235113"
      string "/org/ayatana/bamf/window48234606"
      string "/org/ayatana/bamf/window48234502"
   ]
method return sender=:1.44 -> dest=:1.40 reply_serial=1634
   array [
      string "/org/ayatana/bamf/window31457282"
      string "/org/ayatana/bamf/window31457283"
      string "/org/ayatana/bamf/window31457284"
   ]
method return sender=:1.44 -> dest=:1.40 reply_serial=1635
   array [
      string "/org/ayatana/bamf/window56623107"
   ]
method return sender=:1.44 -> dest=:1.59 reply_serial=478
   string "/org/ayatana/bamf/window56623107"
method return sender=:1.44 -> dest=:1.59 reply_serial=479
   uint32 0
method return sender=:1.44 -> dest=:1.59 reply_serial=480
   string ""
signal sender=:1.44 -> dest=(null destination) serial=2916 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ViewClosed
   string "/org/ayatana/bamf/window56623107"
   string "window"
signal sender=:1.44 -> dest=(null destination) serial=2917 
path=/org/ayatana/bamf/application570171121; 
interface=org.ayatana.bamf.application; member=WindowRemoved
   string "/org/ayatana/bamf/window56623107"
signal sender=:1.44 -> dest=(null destination) serial=2918 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=UserVisibleChanged
   boolean false
signal sender=:1.44 -> dest=(null destination) serial=2919 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=RunningChanged
   boolean false
signal sender=:1.44 -> dest=(null destination) serial=2920 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=ActiveChanged
   boolean false
signal sender=:1.44 -> dest=(null destination) serial=2921 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ActiveApplicationChanged
   string "/org/ayatana/bamf/application570171121"
   string ""
signal sender=:1.44 -> dest=(null destination) serial=2922 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=ChildRemoved
   string "/org/ayatana/bamf/window56623107"
signal sender=:1.44 -> dest=(null destination) serial=2923 
path=/org/ayatana/bamf/window56623107; interface=org.ayatana.bamf.view; 
member=Closed
signal sender=:1.44 -> dest=(null destination) serial=2924 
path=/org/ayatana/bamf/window48235113; interface=org.ayatana.bamf.view; 
member=ActiveChanged
   boolean true
signal sender=:1.44 -> dest=(null destination) serial=2925 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ActiveWindowChanged
   string ""
   string "/org/ayatana/bamf/window48235113"
signal sender=:1.44 -> dest=(null destination) serial=2926 
path=/org/ayatana/bamf/application311805604; interface=org.ayatana.bamf.view; 
member=ActiveChanged
   boolean true
signal sender=:1.44 -> dest=(null destination) serial=2927 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ActiveApplicationChanged
   string ""
   string "/org/ayatana/bamf/application311805604"
method return sender=:1.44 -> dest=:1.40 reply_serial=1636
   array [
   ]
signal sender=:1.44 -> dest=(null destination) serial=2929 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ViewClosed
   string "/org/ayatana/bamf/application570171121"
   string "application"
signal sender=:1.44 -> dest=(null destination) serial=2930 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=Closed
method return sender=:1.44 -> dest=:1.59 reply_serial=481
   uint32 0
method return sender=:1.44 -> dest=:1.40 reply_serial=1637
   uint32 0
method return sender=:1.44 -> dest=:1.40 reply_serial=1638
   string "/org/ayatana/bamf/window48235113"
method return sender=:1.44 -> dest=:1.40 reply_serial=1639
   uint32 0
method return sender=:1.44 -> dest=:1.40 reply_serial=1640
   string "/org/ayatana/bamf/application311805604"
error sender=:1.44 -> dest=:1.40 
error_name=org.freedesktop.DBus.Error.UnknownMethod reply_serial=1641
   string "Method "Children" with signature "" on interface 
"org.ayatana.bamf.view" doesn't exist
"

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-control-center 1:3.2.2-0ubuntu9
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic-pae 3.2.0
Uname: Linux 3.2.0-8-generic-pae i686
ApportVersion: 1.90-0ubuntu2
Architecture: i386
Date: Sat Jan 14 21:02:23 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111225)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to precise on 2012-01-12 (2 days ago)
usr_lib_gnome-control-center:
 deja-dup           21.2-0ubuntu3
 gnome-bluetooth    3.2.1-1ubuntu3
 indicator-datetime 0.3.1-0ubuntu3

** Affects: gnome-control-center (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise running-unity

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/916582

Title:
  calls non-existing "Children" dbus method from org.ayatana.bamf

Status in “gnome-control-center” package in Ubuntu:
  New

Bug description:
  This warning appears in .xsession-errors, while using System
  Settings.../Network (closing the window):

  WARN  2012-01-14 20:57:39 glib <unknown>:0 Unable to fetch children:
  Method "Children" with signature "" on interface
  "org.ayatana.bamf.view" doesn't exist

  While this is the output from dbus-monitor "sender='org.ayatana.bamf'"
  leading up to it:

  signal sender=:1.44 -> dest=(null destination) serial=2902 
path=/org/ayatana/bamf/window56623107; interface=org.ayatana.bamf.view; 
member=NameChanged
     string "System Settings"
     string "Network"
  method return sender=:1.44 -> dest=:1.40 reply_serial=1629
     string "/org/ayatana/bamf/window56623107"
  method return sender=:1.44 -> dest=:1.40 reply_serial=1630
     uint32 0
  method return sender=:1.44 -> dest=:1.40 reply_serial=1631
     string "/org/ayatana/bamf/application570171121"
  method return sender=:1.44 -> dest=:1.59 reply_serial=475
     string "/org/ayatana/bamf/window56623107"
  method return sender=:1.44 -> dest=:1.59 reply_serial=476
     uint32 0
  method return sender=:1.44 -> dest=:1.59 reply_serial=477
     string ""
  method return sender=:1.44 -> dest=:1.40 reply_serial=1632
     array [
        string "/org/ayatana/bamf/window58720475"
     ]
  method return sender=:1.44 -> dest=:1.40 reply_serial=1633
     array [
        string "/org/ayatana/bamf/window48240889"
        string "/org/ayatana/bamf/window48235113"
        string "/org/ayatana/bamf/window48234606"
        string "/org/ayatana/bamf/window48234502"
     ]
  method return sender=:1.44 -> dest=:1.40 reply_serial=1634
     array [
        string "/org/ayatana/bamf/window31457282"
        string "/org/ayatana/bamf/window31457283"
        string "/org/ayatana/bamf/window31457284"
     ]
  method return sender=:1.44 -> dest=:1.40 reply_serial=1635
     array [
        string "/org/ayatana/bamf/window56623107"
     ]
  method return sender=:1.44 -> dest=:1.59 reply_serial=478
     string "/org/ayatana/bamf/window56623107"
  method return sender=:1.44 -> dest=:1.59 reply_serial=479
     uint32 0
  method return sender=:1.44 -> dest=:1.59 reply_serial=480
     string ""
  signal sender=:1.44 -> dest=(null destination) serial=2916 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ViewClosed
     string "/org/ayatana/bamf/window56623107"
     string "window"
  signal sender=:1.44 -> dest=(null destination) serial=2917 
path=/org/ayatana/bamf/application570171121; 
interface=org.ayatana.bamf.application; member=WindowRemoved
     string "/org/ayatana/bamf/window56623107"
  signal sender=:1.44 -> dest=(null destination) serial=2918 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=UserVisibleChanged
     boolean false
  signal sender=:1.44 -> dest=(null destination) serial=2919 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=RunningChanged
     boolean false
  signal sender=:1.44 -> dest=(null destination) serial=2920 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=ActiveChanged
     boolean false
  signal sender=:1.44 -> dest=(null destination) serial=2921 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ActiveApplicationChanged
     string "/org/ayatana/bamf/application570171121"
     string ""
  signal sender=:1.44 -> dest=(null destination) serial=2922 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=ChildRemoved
     string "/org/ayatana/bamf/window56623107"
  signal sender=:1.44 -> dest=(null destination) serial=2923 
path=/org/ayatana/bamf/window56623107; interface=org.ayatana.bamf.view; 
member=Closed
  signal sender=:1.44 -> dest=(null destination) serial=2924 
path=/org/ayatana/bamf/window48235113; interface=org.ayatana.bamf.view; 
member=ActiveChanged
     boolean true
  signal sender=:1.44 -> dest=(null destination) serial=2925 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ActiveWindowChanged
     string ""
     string "/org/ayatana/bamf/window48235113"
  signal sender=:1.44 -> dest=(null destination) serial=2926 
path=/org/ayatana/bamf/application311805604; interface=org.ayatana.bamf.view; 
member=ActiveChanged
     boolean true
  signal sender=:1.44 -> dest=(null destination) serial=2927 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ActiveApplicationChanged
     string ""
     string "/org/ayatana/bamf/application311805604"
  method return sender=:1.44 -> dest=:1.40 reply_serial=1636
     array [
     ]
  signal sender=:1.44 -> dest=(null destination) serial=2929 
path=/org/ayatana/bamf/matcher; interface=org.ayatana.bamf.matcher; 
member=ViewClosed
     string "/org/ayatana/bamf/application570171121"
     string "application"
  signal sender=:1.44 -> dest=(null destination) serial=2930 
path=/org/ayatana/bamf/application570171121; interface=org.ayatana.bamf.view; 
member=Closed
  method return sender=:1.44 -> dest=:1.59 reply_serial=481
     uint32 0
  method return sender=:1.44 -> dest=:1.40 reply_serial=1637
     uint32 0
  method return sender=:1.44 -> dest=:1.40 reply_serial=1638
     string "/org/ayatana/bamf/window48235113"
  method return sender=:1.44 -> dest=:1.40 reply_serial=1639
     uint32 0
  method return sender=:1.44 -> dest=:1.40 reply_serial=1640
     string "/org/ayatana/bamf/application311805604"
  error sender=:1.44 -> dest=:1.40 
error_name=org.freedesktop.DBus.Error.UnknownMethod reply_serial=1641
     string "Method "Children" with signature "" on interface 
"org.ayatana.bamf.view" doesn't exist
  "

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: gnome-control-center 1:3.2.2-0ubuntu9
  ProcVersionSignature: Ubuntu 3.2.0-8.15-generic-pae 3.2.0
  Uname: Linux 3.2.0-8-generic-pae i686
  ApportVersion: 1.90-0ubuntu2
  Architecture: i386
  Date: Sat Jan 14 21:02:23 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111225)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: gnome-control-center
  UpgradeStatus: Upgraded to precise on 2012-01-12 (2 days ago)
  usr_lib_gnome-control-center:
   deja-dup           21.2-0ubuntu3
   gnome-bluetooth    3.2.1-1ubuntu3
   indicator-datetime 0.3.1-0ubuntu3

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