Check out the upgrade phatness. (Okay, it's mostly a security fix, but that's good too.)
Here are the files I found that I needed to update. YMMV

• in the base dir
• wp-login.php
• wp-comments-post.php
• in wp-includes
• wp-l10n.php
• version.php
• functions-formatting.php
• in wp-admin
• wp-admin.css
• post.php
• options.php
• import-rss.php
• edit.php
• categories.php
• bookmarklet.php
• admin-header.php

Good Luck