Comments and Misclicks on Digg

How many of you have gone to digg a user's comment and accidentally clicked on the wrong button? Maybe your mouse was being wonky, or you were just being silly. I know I have, several times. I know it's a minor annoyance, but I think it's an important issue. I don't believe that there should be any sort of interface change, but perhaps Digg could add a timer, maybe 5 seconds, that you have to change a rating?