The necessary dconf changes are targeted for inclusion in GNOME 3.6 and F18. See https://bugzilla.gnome.org/show_bug.cgi?id=595579
Note: This issue has been fixed in current upstream (dconf-0.15.3). It still has to be configured to do so (see https://bugzilla.gnome.org/show_bug.cgi?id=595579#40).
(In reply to comment #2) > https://bugzilla.gnome.org/show_bug.cgi?id=595579#40). It should be: https://bugzilla.gnome.org/show_bug.cgi?id=595579#c40
I have tested Multiple Logins feature, which depends on this. It is working using configuration from comment #3
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request.