Possible Duplicate:
Cancel a vote so that the tally goes back to zero and not minus
Bug in downvote/upvote
There was a response to a question this afternoon which merited a downvote because the initial response was incorrect. However the author edited their solution to an acceptable answer, so I wanted to remove my downvote, by clicking the up arrow, thinking this would zero out the downvote. Instead it removed my downvote then added +1 for an upvote. How should I have zeroed out my downvote without casting an upvote? Just click on the number?