I checked the server loads and they appear to be a bit above normal, but certainly not at any critical stage.
The message above is from the hosting site - apparently the 'host' had a short glitch/overload, or was doing maintenance and were rebooting their systems. Hosting services never post date/time information about when they are going to take systems down for maintenance. Neither do we for that matter when we update internal software.
The "forbidden" notice means that your IP was blocked ... all IP's will be auto blocked when the host goes down, even mine.