Hello
Mmmhh, xorg-x11 7.4 is still marked as unstable for amd64 arch... . I'm using 7.2.
Anyway I doubt that xorg.conf has something to do with it, if the problem has something to do with dbus.
Do you have dbus installed and running (/etc/init.d/dbus start)? (don't know if this would solve the issue)
At the bottom of "/etc/rc.conf", which window manager are you using? kde, gnome, enlightenment, ...? (asking because of the "horrible X terminals")
Which GPU are you using and which drivers? nVidia, Intel, ATI, ... .
Perhaps posting as well /var/log/Xorg.0.log would help... .
