Strange Comments Layout After Switch To WordPress

I’ve just completed the switch from Blogger to WordPress, but I noticed that my comments look terribly weird. There’s a big space between the author and the actual comment–everything else looks fine. I can’t seem to identify a padding, margin, or align issue that could cause this.

Example : http://www.muumuse.com/2009/08/muumuse-is-too-busy-getting-sexy-right.html#comments

And my comment style section:

/*—:[ comment styles ]:—*/

#comments { width: 463px; margin: 4.0em 0 2.0em 0; color:black; }

.comments_intro { padding: 0 20px; font: normal 1.2em/1.66667em Verdana, sans-serif; color:black; border-bottom: 1px dotted #bbb; }

.comments_intro span { padding: 0 0 0 14px; background: url(‘images/icon_comment.gif’) 0 50% no-repeat; }

dl#comment_list { margin: 0 0 3em 0; }

dl#comment_list dt.comment { width: 445px; padding: 1.42857em 9px 0.71429em 9px; background: #F8F8F8; font-size: 1.4em; line-height: 1.42857em; }

.comment_num { padding: 0 0 0 20px; font: bold 0.85714em/1.66667em Verdana, sans-serif; float: right; }

.comment_num a, .comment_num a:visited { color: black; text-decoration: none; }

.comment_num a:hover { color: #237fa1; text-decoration: none; }

.comment_time { font: normal 0.78571em Verdana, sans-serif; color: #999; }

dl#comment_list dd.comment { width: 445px; padding: 0 9px 0.8em 9px; background: #f8f8f8; border-bottom: 1px dotted #bbb; margin:bottom -10px; }

dl#comment_list dt.alt, dl#comment_list dd.alt { background: #fff; margin:bottom -10px; }

dl#comment_list dt.author, dl#comment_list dd.author { background: #e7f8fb !important; }

.comment .format_text { padding: 0 10px; }

.comment a.comment_link, .comment a.comment_link:visited { font-style: italic; font-weight: bold; color: #333; background: none; text-decoration: none; }

.comment a.comment_link:hover { color: #333; text-decoration: underline; }