From Thursday, March 31st 2011 banks will no longer process Solo cards and therefore Paddy Power will be unable to process transactions made with Solo cards.
If you are a Solo card holder you should already have been notified by your card-issuing bank of the change, and you were probably issued with a new card to replace it.
If you would like to know how to change your payment method on Paddy Power from Solo to your new card, please read ahead to this article: