Comment # 6 on bug 980212 from Mikhail Kasimov

(In reply to Dr. Werner Fink from comment #4)
> Just do the systemctl as root, then you might the correct result I guess and
> as you have already shown.  Btw: do never start and/or use firefox as root.

I never start firefox as root. :) This trouble I got as user.
> 
> Firefox and/or some of the plugins and/or addons are changing the local unix
> sockets of the dbus connection used by systemctl and/or the GTK libraries
> used by firefox which also uses dbus.

Ok, thanks. Didn't know about that.

> Also you might deinstall flash or use the repository from adobe them self
> 
>   http://linuxdownload.adobe.com/linux/x86_64/

Returns 403.

> This is not a bug of systemd nor systemctl.

ok.