Atahualpa Comment box not working

Hello,
I had trouble on the Twenty Ten theme because the comment box did not work. I upgraded to the latest Atahualpa. Now there is a "Leave a Comment" link under each post, but I tested it and it jumps to the upper right hand corner where there is a "subscribe to comment feed" button. I clicked on that and there is no option to leave a comment--only a list of some very old comments that were submitted to my contact page because the Twenty Ten comment box wasn't working. I used to have a comment box at the bottom of each post. I would like to restore that arrangement and the abundant discussion my blog readers used to enjoy. Thank you for your help.