It is true that we don't know the number, but the 4 million was the case year ago. To assume it is still 4 million means that new placements of the older DVR models have been equal to or faster than they have fallen out of service due to churn or been upgraded to the VIP models. I just find that hard to believe and believe the number has fallen over time. It still may be a very substantial number, or it may be a much smaller number. I don't know which, but would not be surprised to hear that it is the latter. Also, DVRs that are turned off become full featured receivers, so customers will still be able to receiver the service, just not use the DVR features. If Dish has a well advertised upgrade/replacement plan in place, many would probably stick it out if they knew the wait was not unacceptably long. Of course those are individual decisions, and we don't have a clue how those would shake out.