Tell pg: Someone is abusing my karma...

Hello, someone is abusing my karma.. take a look at this: http://news.ycombinator.com/threads?id=thepanister

And tell me why the second comment is down-voted? It was down-voted just a minute ago.

Please tell me who down-voted that comment, because that user is abusing my karma - I don't know him of course!

EDIT: Someone just up-voted the second comment, but I am sure that you can know who have down-voted that comment few minutes ago!