Thanks, that's what I figured. People speak in such enraged tones about comparatively trifling bugs that it can be very confusing coming into this board!
I was enraged back at 1.2, this time I am mostly asking for information, I didn't advance more when I read that, as I didn't want to mess something up, If you don't believe that bug exists, you should do the Dawnguard main quest before the original Skyrim main quest line and see it for yourself, I did some research before posting here and found some information, even in this forum (http://www.gamesas.com/topic/1389814-dawnguard-bug-list-1/) says it breaks the quest, I don't know if it do breaks it as I haven't advanced on it, but it sure is messed up, at least the story is now