Error replacing contact's actual speed

[johnlarue]

Hi folks!
Maybe this subject is mentioned before, but I couldn't find it.
I have experienced two or three times that a message in the radiomessagebox was talking about an Error replacing contact's actual speed. It's just this message; I see no further strange things.
I know it has something to do with the speed of a ship nearby, but I do not know exactly what it means and what it does or doesn't do. And furthermore, I can continue playing the game. So I assume it's nothing serious.
Is someone so kind to explain this to me and -more important- what do I have to do about it?

Greetz