I originally posted this in another topic, but then I realized that this is a better fit in a real Question (I always comment to SO newbs "Please do not post Questions as Answers :)", it would be arrogant not to do the same ;) ).
I noticed that Mark Byers became Legendary today. I first wondered because he has a relatively low reputation to earn the badge (as opposed to others when they received it), so I went to his reputation history with the well known Greasemonkey thing turned on and the script tells that he has yet 14 days left for the badge.
True, I know that the script isn't perfect, it's often being optimistic with 2~3 days ahead, but 14 days as in this case is a pretty huge gap and it's even a gap behind.
Bug?
Nothing against Mark btw. I don't even know him.