Author profile problem

I’m trying to get an author profile working for a level 9 author, and for some reason the user data doesn’t show up. The other author profiles work (theirs’ are around level 1-3), but for some reason the admin and level 9 authors aren’t getting profiles working. This is the way I have it coded (the key part):


<?php
if(isset($_GET['author_name'])) :
$curauth = get_userdatabylogin($author_name);
else :
$curauth = get_userdata($author);
endif;
?>

<h2><?php echo $curauth->user_firstname; ?> <?php echo $curauth->user_lastname; ?></h2>

<dl id="author-info">
<dt>Nickname (or a.k.a.)</dt>
<dd><?php echo $curauth->user_nickname; ?></dd>

<dt>Email</dt>
<dd><a href="mailto:<?php echo $curauth->user_email; ?>"><?php echo $curauth->user_email; ?></a></dd>

<dt>Website</dt>
<dd><a href="<?php echo $curauth->user_url; ?>"><?php echo $curauth->user_url; ?></a></dd>

<dt>AIM Screen Name</dt>
<dd><a href="aim:goim?screenname=<?php echo $curauth->user_aim; ?>&message=hi"><?php echo $curauth->user_aim; ?></a></dd>

<dt>Profile/Bio</dt>
<dd><?php echo $curauth->user_description; ?></dd>

<!-- <dt>Total Posts Posted</dt>
<dd><?php // the_author_posts(); ?></dd> -->
</dl>

A couple example profiles that are working:
https://plainculture.com/archives/author/lukefrutig/
https://plainculture.com/archives/author/daysdifference/

And these are the profiles that aren’t working:
https://plainculture.com/archives/author/jon-the-jester/ (<< level 9 author)
https://plainculture.com/archives/author/plainculture-sniper-admin/ (<< admin account)

If anyone could help me on this, I’d definitely appreciate it. ??

Using last night’s nightly WP, for the record.