It might be from a bounty of 500, from a user who deleted his account. But the blue +500 flag is still attached to the question, so everybody who sees it will think that I have only about 300pt apart from that bounty.
- My reputation graph still shows 1379 points for
skeptics
. - The question with 500pt bounty
What's the logic in deleting such a bounty at all? And: I would suggest to remove the bounty-flag as well.
Edit: A few hours later the graph was updated, and didn't show the bounty any more. Not 500 up, and 500 down, but as if it never happened. The question is still decorated with the 500-award, but its tooltip does not show any name either: