I bet they leave the sd versions on the stronger TX because there are more SD customers then hd. Think about it, almost everyone who subs to HD also subs to SD. And then you got folks with 722, 322 etc. that's three TVs in sd. This doesn't mean they are on the same account, just in general. Although there is an overwhelming majority of Hd subscribers, why not appease both parties, and reduce calls during storms. Most people won't call if they can still watch something, and the SD clientele won't even know there is something wrong with the hd channels. As for the sd channels on EA(duplicates), what about those that were forced to migrate, but do not want to sub to hd? Remember, it is $10 per month without a promotion of some sort.