I've been doing some tanking and I seem to be getting multiples of the same heroic dungeon. Today I did FOS HC twice, POS HC twice and HOR HC twice, yes, all were heroic difficulty, also I did not play around the raid lock reset time. It was in the middle of the day, the dungeons had not reset. They were locked and then I got them again and did them again, loot dropped again. What's up with that? I've noticed it more when tanking but I think it has to do with shorter queue times for tanks because I can do more dungeons and it's easier to notice when a HC dungeon repeats. I play on Lordaeron btw.