Unable to connect to the system bus: Failed to connect to socket /var/run/dbus/system_bus_socket: Connection refused [solved]

14. October, 2011

Oneiric is there but in my case, I hit a bug during the upgrade:

Unable to connect to the system bus: Failed to connect to socket /var/run/dbus/system_bus_socket: Connection refused

The bug is tracked on Launchpad. See comment #24 for a solution.