I see that you've mucked about a bit with it, so I
assume this is not caused by a problem in the installation. Remove the line that I've put between asterisks. It's a duplicate of the second line, but with the wrong distribution name.
By the way, please keep this on the mailing list instead of mailing me personally. It's better for you because you're more likely to get better help and it's better for other users who might be facing the same problem.