I have had Sky HD since January. No major problems except the odd lockup. On Monday this week an error occured whereby the box reported "There is a error with your viewing card" on the all the subscription channels and the non FTA channels ie 4 & 5 etc. This occurs on playback of recorded subscription material as well. Rang Sky and after a couple of rounds of them activating cards , sending signals waiting for up to 4 hours etc still no joy. They sent out another viewing card after another two rounds of activating cards & sending signals wait up to 4 hours again it is still not working. Any ideas on what the problem could be? Thanking you in advance.