This has happened to me twice today. I click on Hot Posts and see there are quite a few new posts since I last checked in. I click on a post I'm interesed in, read it, hit the back button, and find the number of Hot Posts is reduced to two. There were at least six posts, perhaps as many as a dozen, when I first opened it. After reading only one, all but two of the ones I saw just a minute ago are gone. And in both cases there were just two posts listed after clicking the back button. Very odd. Anyone else running into this?