Comment 2 for bug 1227637

hob@hob:~$ sudo apt-get install --reinstall xubuntu-default-settings
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0 B/20.8 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 199729 files and directories currently installed.)
Preparing to replace xubuntu-default-settings 13.10.5 (using .../xubuntu-default-settings_13.10.5_all.deb) ...
Unpacking replacement xubuntu-default-settings ...
Processing triggers for libglib2.0-0:amd64 ...
No such key 'auto-launch' in schema 'com.ubuntu.update-notifier' as specified in override file '/usr/share/glib-2.0/schemas/20_xubuntu-default-settings.gschema.override'; ignoring override for this key.
Processing triggers for libglib2.0-0:i386 ...
No such key 'auto-launch' in schema 'com.ubuntu.update-notifier' as specified in override file '/usr/share/glib-2.0/schemas/20_xubuntu-default-settings.gschema.override'; ignoring override for this key.
Processing triggers for gconf2 ...
Setting up xubuntu-default-settings (13.10.5) ...

seeing the same here