Link problem

I recently ran into this issue as well. The problem is that the comments go through a sanitising feature which takes out malicious content but also filters out some useful parts of URLs in comments. Here is the fix, though I suggest you leave it the way it is for security:
Find this function inside b2template.functions.php which is inside the b2-include folder:
function comment_text() {
global $comment;
$comment_text = stripslashes($comment->comment_content);
$comment_text = str_replace(‘<trackback />’, ”, $comment_text);
$comment_text = str_replace(‘<pingback />’, ”, $comment_text);
$comment_text = convert_chars($comment_text);
$comment_text = convert_bbcode($comment_text);
$comment_text = convert_gmcode($comment_text);
$comment_text = convert_smilies($comment_text);
$comment_text = make_clickable($comment_text);
$comment_text = balanceTags($comment_text,1);
$comment_text = apply_filters(‘comment_text’, $comment_text);
echo $comment_text;
}
Change it to:
function comment_text() {
global $comment;
$comment_text = stripslashes($comment->comment_content);
$comment_text = str_replace(‘<trackback />’, ”, $comment_text);
$comment_text = str_replace(‘<pingback />’, ”, $comment_text);
$comment_text = convert_chars($comment_text);
$comment_text = convert_bbcode($comment_text);
$comment_text = convert_gmcode($comment_text);
$comment_text = convert_smilies($comment_text);
$comment_text = make_clickable($comment_text);
//Made change to comments to make some links work
$comment_text = balanceTags($comment_text,0);
$comment_text = apply_filters(‘comment_text’, $comment_text);
echo $comment_text;
}