At least, one of them did. I was getting "lost" digital channels that just tuned to black. I decided to clear and delete everything as a troubleshooting step and...well, he didn't make it. He stuck at the "almost" screen. I returned it for replacement at circuit city, no hassle, and authed the card to the new box. I had hopes that the card might "just work" in the new unit but no luck. All is well so far.