I’m sure you’ve done it already, but WordPress 3.0.1 (a maintenance release) is out since Friday and you should have upgraded (and updated the database) already by downloading the 3.0.1 version.

List of revised files:

wp-signup.php
wp-includes/default-filters.php
wp-includes/nav-menu-template.php
wp-includes/taxonomy.php
wp-includes/class-http.php
wp-includes/update.php
wp-includes/post.php
wp-includes/version.php
wp-includes/default-widgets.php
wp-includes/theme.php
wp-includes/comment-template.php
wp-includes/ms-blogs.php
wp-includes/query.php
wp-includes/link-template.php
wp-includes/wp-db.php
wp-includes/formatting.php
wp-includes/ms-deprecated.php
wp-includes/general-template.php
wp-includes/canonical.php
wp-includes/capabilities.php
wp-includes/ms-load.php
wp-includes/classes.php
wp-includes/deprecated.php
wp-includes/kses.php
wp-includes/ms-functions.php
wp-includes/meta.php
wp-includes/nav-menu.php
wp-app.php
xmlrpc.php
wp-content/themes/twentyten/style.css
wp-content/themes/twentyten/functions.php
wp-content/themes/twentyten/loop.php
wp-content/themes/twentyten/page.php
wp-content/themes/twentyten/languages/twentyten.pot
wp-content/themes/twentyten/editor-style.css
wp-content/themes/twentyten/header.php
wp-content/themes/twentyten/attachment.php
readme.html
wp-admin/ms-edit.php
wp-admin/edit-comments.php
wp-admin/admin-ajax.php
wp-admin/includes/bookmark.php
wp-admin/includes/post.php
wp-admin/includes/dashboard.php
wp-admin/includes/upgrade.php
wp-admin/includes/class-wp-upgrader.php
wp-admin/includes/schema.php
wp-admin/includes/meta-boxes.php
wp-admin/includes/update-core.php
wp-admin/includes/template.php
wp-admin/includes/user.php
wp-admin/includes/ms.php
wp-admin/includes/media.php
wp-admin/includes/export.php
wp-admin/includes/nav-menu.php
wp-admin/includes/class-wp-importer.php
wp-admin/edit-tags.php
wp-admin/admin.php
wp-admin/edit-attachment-rows.php
wp-admin/ms-sites.php
wp-admin/user-new.php
wp-admin/menu.php
wp-admin/nav-menus.php
wp-admin/plugins.php
wp-admin/edit.php
wp-admin/press-this.php
wp-admin/install.php
wp-admin/update-core.php
wp-admin/import.php
wp-admin/export.php