>>I was not using it before (had it disabled). Setting the width to 0, as Tracy pointed out, has helped
>
>Ok, but, I wouldn't recommend setting it to 0 as this will hide some upcoming options. It would then be as if someone would disable the upper toolbar.

I'll find out when they arrive. I have never used the dashboard

In the meantime, if I want to disable it, why shouldn't that be possible ?