I'm not one to hunt down every single shard, but I do explore all the dungeons and one thing this one doesn't have that all others do, is a skyshard. I've checked locations on the internet just in case I was wrong and I am not. The spot that the shard should be, in Aba-Loria, Coldharbour, is empty. Did it fall through the geometry in one of the patches or is it in a new, super-secret place?