I dont believe its the search form from the admin-bar.php page anymore because I commented out the entire function. The search box disappeared from the right side of the admin bar, but the $_FILES array is still null. Theres a conflict somewhere, but I'm not sure what would cause grief from the admin-bar.php page?
/**
* Add search form.
*
* @since 3.3.0
*/
//function wp_admin_bar_search_menu( $wp_admin_bar ) {
// if ( is_admin() )
// return;
// $form = '<form enctype="multipart/form-data" action="' . esc_url( home_url( '/' ) ) . '" method="get" id="adminbarsearch" >';
// $form .= '<input class="adminbar-input" name="s" id="adminbar-search" type="text" value="" maxlength="150" />';
// $form .= '<input type="submit" class="adminbar-button" value="' . __('Search') . '"/>';
// $form .= '</form>';
// $wp_admin_bar->add_menu( array(
// 'parent' => 'top-secondary',
// 'id' => 'search',
// 'title' => $form,
// 'meta' => array(
// 'class' => 'admin-bar-search',
// 'tabindex' => -1,
// )
// ) );
//}