Anyone have problems with Royal bank of scotland, Ulster bank or Natwest online banking card readers?

I got a card reader from ulsterbank for online banking security authorisation. It worked for a while but now it keeps giving me wrong codes and my card has been temporary blocked 3 times due to it. I have also had 2 new readers sent out and its doing the same thing. So it does seem obvious that its the card, but what could cause it if it was working fine and not working the next minute?

Anyone else have them problems?

Stop arguing with the morons and "loose" the card ... then they will have to send you a new one.

No technology ever works reliably on first 'launch' == you are unlucky to have a bank that has decided to use it's customers as guinea-pigs, so if you can't be bothered to help them 'debug' the system, change bank ...

NB. Most likley problems are Internet connection related ESPECIALLY if your connection is wireless (WiFi) or your home phone line has extension sockets.