"Robin May" wrote in message
.4...

"Announcements are being made at stations telling passengers how to use
the cards in an effort to try to make them work."

That suggests to me it's probably something to do with pre-pay
deducting the maximum fare if passengers don't "touch the card on the
yellow readers at the start and end of your journey". I know that's not
a bug, that's just people using it incorrectly, but I am taking into
account the usual level of Evening Standard inaccuracy.

I thought so too when I read "Announcements are being made at stations
telling passengers how to use the cards in an effort to try to make them
work" but then I read "Prestige, the firm that runs the Oyster card, is
recalling some of them to discover how they can rectify the bug, staff have
told the MP". If they have to recall some of the cards, then it does not
sound like a passenger education issue.