I received the yellow card for my 721 receiver today. So I followed the instructions given: slapped it in, activated it with the automated system over the phone... and waited. The sheet said to give it 15 minutes for programming to return. I gave it 30. Still the error screen glared at me, with its "the smartcard is not authorized for use with this receiver." Joy. So I call up Dish Network, and am given the usual tasks of removing and reinserting the smartcard, etc. Finally, I am given to a "higher level" rep (with amazing English-speaking ability. Not really.) who, after some checking on my error 020, tells me my 721 might be too old to be compatible with the new yellow card. Say what? Long story short: Dish is sending me a new 721 receiver, along with a box to return my old one. The rep assures me the new receiver is free, but I'll bet any money I'll be seeing a sizable charge on my account in the future even after they've received my old one. Sounds suspicious to me.