Bug#527860: xserver-xorg: Restarting D-Bus restarts the X server
I have the same problem with current (11.05.2009) Debian Sid. My xserver
just hangs after restarting dbus, It is realy annoying bug, because some
updates installed via apt-get upgrade has to restart d-bus, so I have to
do apt-get upgrade from console with killed Xorg.