It is (mostly) working on my WP 3.0.1 install.
As stated, the “Pages Manager” link and the “Manage” links don’t work as they should because WP renamed the pages that these pointed to. You can still use the plugin without those links or you can edit the plugin code to point to the correct pages in WP3.
Everything else is working well for me.
If you are interested in editing the plugin:
Change:
<a href="edit-pages.php">Pages Manager</a>
to
<a href="edit.php?post_type=page">Pages Manager</a>
and change:
<a href="page.php?action=edit&post=<?=$v[0]?>">Manage</a>
to
<a href="post.php?action=edit&post=<?=$v[0]?>">Manage</a>
At least that worked for me. YMMV
