installed 3.4.1, then searched plugins for a contact form that says it works with the new wp version. Installed "Contact form" clicked on settings, kept the default email, clicked save, and got a 404 error.
clicking save tries to load: /wp-includes/contact-form-plugin/admin.php?page=contact_form.php web browser says page does not exist.
should hitting save on the settings page send you to /wp-includes/contact-form-plugin/contact_form.php ?
there is not an admin.php page in the contact form plugin directory