AFAIK there are two possible reasons for this. The first is that your ISP has problems logging you in to the customer-database to check if you are allowed on their networtk. Usually this is a connection that is beïng made to one specific server that sends back the permission (or not) and then gives way to the internet servers itself.

A robot which runs at a speed of over 29mph has set a new land-speed record for legged robots

The time now being come about for payment of the third tribute, when they came to compel the fathers which had children not yet married, to give them to be put forth to take their chance and lot: the citizens of Athens began to murmur against Ægeus, alleging for their grieves⁶, that he, who only was the cause of all this evil, was only alone exempted from this grief.[…] / ⁶ griefs.

They were forced to completely replace the roof at ruinous expense.