Comment 6 for bug 293970

This happens to me when I log out. The screen goes blank, and the computer stop responding entirely. ctrl+alt+f1 (etc), ctrl+alt+backspace... nothing works. I have to power off my computer and power back on again. I always find this message in /var/log/messages:

Jan 30 11:23:39 acerbic bonobo-activation-server (ianfp-8241): could not associate with desktop session: Failed to connect to socket /tmp/dbus-YrS0i8o3CM: Connection refused