Comment # 2 on bug 1204564 from Luca Di Maio

Without it, many apps will search for the accessibility dbus service and wait
for timeout, these are the logs:

```
** WARNING **: Error retrieving accessibility bus address:
org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not
provided by any .service files
```

That was even with thumbnails disabled in nautilus.

Probably the thumbnailers will search for this service also, aggravating the
problem