I've not noticed this behavior before. When I use the following url:
I see the following for a split second:
And then the homepage loads up. Isn't this a bit suspicious? It happens for the first time every day and subsequent visits on the same day seem to behave normally.
I feel that it is searching for a cookie and upon not finding one, is showing the "wait" message, setting a cookie (with expiry of 24 hours) and then proceeding to the homepage.
If that is not the case I wonder why it happens.