it tells currently : WARN: postinst You must restart D-Bus `/etc/init.d/dbus restart` to run the new version of the daemon. Don't do this while X is running because it will restart your X as well. But I restarted dbus here w/o any problem s - it did not restart the X server.
http://sources.gentoo.org/viewvc.cgi/gentoo-x86/sys-apps/dbus/dbus-1.8.6.ebuild?r1=1.10&r2=1.11