What is this stuff ?

[Erwan David <erwan@rail.eu.org>]

	I see the following lines in my /var/log/messages

Jul 21 09:05:58 nux28622 org.a11y.Bus[1674]: Activating service name='org.a11y.atspi.Registry'
Jul 21 09:05:59 nux28622 org.a11y.Bus[1674]: Successfully activated service 'org.a11y.atspi.Registry'
Jul 21 09:05:59 nux28622 org.a11y.atspi.Registry[1958]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
Jul 21 09:05:59 nux28622 org.a11y.atspi.Registry[1958]: ** (at-spi2-registryd:1963): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
Jul 21 09:05:59 nux28622 org.a11y.atspi.Registry[1958]: ** (at-spi2-registryd:1963): WARNING **: Unable to register client with session manager

What is this ?

I did not find anything related to a11y or spi.

What is this error ? Which package shopuld I report a bug against (I do not use gnome thus wanting gnome is a bug)