Interesting ... I just got that sort of message too. Logins appear to handled here:
My message is:
"We're sorry, but the specified library patron account information is not valid.
Details: (1) There appears to be a problem with your library card. It is possible your card has expired and should be renewed."
It's possible this is true but I'm a normal active user. If it doesn't clear I suppose it's a trip to the library.