No it isn't - and if you've seen that message it's some odd DNS error and not the domain nipping out for a bite to eat. I've had this error for minutes / hours and it's really annoying.
On Windows you can avoid this error by editing your Hosts file. It's not tricky at all:
and the entry you need in there is:
It's also out of Matt's control - even he can't change DNS the way this is :)