Bug#525718: is it possible to switch filemanager back to required_components?

[darren]

> It’s not as simple with the panel; a session without the panel is really
> unusable. This is also why it needs to be respawned if it dies for
> whatever reason, unlike nautilus for which this is just comfort.
>
> So for the panel, it makes more sense to let users who don’t need it
> remove it from the required components by hand.
>
> OTOH it would be better if all of this could be documented in the
> README.Debian. I’ll add that to the next upload.

remove nautilus(filemanager) from required components and make
it as an autostart item seems much better for most people.

but I personally much like session-manager to respawn  nautilus
when it exits  or being killed manually in cases it hangs when  browsing remote
directory using sftp or samba while the server dies,is it possible to switch
nautilus back to  required components?

here is what I tried but failed:
remove  /usr/share/gnome/autostart/nautilus.desktop
then add filemanager back to required_components_list

logout and login again,nautils is not started by the session-manager
it says in .xsession-errors:
 WARNING: Unable to find provider 'nautilus' of required component 'filemanager'

Anyting I did wrong?or is it impossible to switch back?