VERY wired problem with switch in meta box

Hi
I created a new custom meta box and everything work well (saving, outputting) but I don’t get any change when I try to add some lines of code to the switch statement
For example: when I delete few ‘cases’ from the ‘switch’ statement no changes taking place… or even when I add new class to an input inside the switch, still I get no changes

Here is the full code:

$prefix = 'ks-';
$header_meta = array(
    array(
        'name' => 'header-options',
        'id' => $prefix . 'header-options',
        'type' => 'radio',
        'options' => array(
            array('name' => 'Show Page Title', 'value' => 'title-true'),
            array('name' => 'Hide Page Title', 'value' => 'title-false'),
            array('name' => 'Fancy Header', 'id' => 'fancy-header-setting', 'value' => 'fancy-header'),
            array('name' => 'Slideshow', 'value' => 'slideshow')
        )
    ),
    array(
        'name' => 'header-effect',
        'id' => $prefix . 'header-effect',
        'type' => 'radio',
        'options' => array(
            array('name' => 'Normal', 'value' => 'normal'),
            array('name' => 'Overlaping', 'value' => 'overlaping')
        )
    ),
    array(
        'name' => 'Text box',
        'desc' => 'Enter something here',
        'id' => $prefix . 'text',
        'type' => 'text',
        'std' => 'Default value 1'
    ),
    array(
        'name' => 'Textarea',
        'desc' => 'Enter big text here',
        'id' => $prefix . 'textarea',
        'type' => 'textarea',
        'std' => 'Default value 2'
    ),
    array(
        'name' => 'Select box',
        'id' => $prefix . 'select',
        'type' => 'select',
        'options' => array('Option 1', 'Option 2', 'Option 3')
    ),
    array(
        'name' => 'Radio',
        'id' => $prefix . 'radio',
        'type' => 'radio',
        'options' => array(
            array('name' => 'Name 1', 'value' => 'Value 1'),
            array('name' => 'Name 2', 'value' => 'Value 2'),
            array('name' => 'Name 3', 'value' => 'Value 3')
        )
    ),
    array(
        'name' => 'Checkbox',
        'id' => $prefix . 'checkbox',
        'type' => 'checkbox'
    ),
    array(
        'name' => 'Colorpicker',
        'id' => $prefix . 'colorpicker',
        'type' => 'text',
        'default' => '#ffffff',
        'class' => 'ks-display-colorpicker',
    )
);

// Meta box output html
function ks_header_settings_display( $post ) {
    global $header_meta, $post;
    echo '<table id="fancy-header-setting">';
    foreach ($header_meta as $field) {
        // get current post meta data
        $meta = get_post_meta($post->ID, $field['id'], true);
        echo '<tr>',
                '<th style="width:20%"><label for="', $field['id'], '">', $field['name'], '</label></th>',
                '<td>';
        switch ($field['type']) {
            case 'header-options':
                echo '<input type="radio" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />', '<br />', $field['desc'];
                break;
            case 'header-effect':
                ?><div id="fancy-header-setting-container"><?php
                echo '<input type="radio" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />', '<br />', $field['desc'];
                break;
            case 'text':
                echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />', '<br />', $field['desc'];
                break;
            case 'textarea':
                echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="4" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>', '<br />', $field['desc'];
                break;
            case 'select':
                echo '<select name="', $field['id'], '" id="', $field['id'], '">';
                foreach ($field['options'] as $option) {
                    echo '<option ', $meta == $option ? ' selected="selected"' : '', '>', $option, '</option>';
                }
                echo '</select>';
                break;
            case 'radio':
                foreach ($field['options'] as $option) {
                    echo '<input type="radio" name="', $field['id'], '" value="', $option['value'], '"', $meta == $option['value'] ? ' checked="checked"' : '', ' />', $option['name'];
                }
                break;
            case 'checkbox':
                echo '<input type="checkbox" name="', $field['id'], '" id="', $field['id'], '"', $meta ? ' checked="checked"' : '', ' />';
                break;
            case 'colorpicker':
                echo '<div class="', $field['class'],'"></div>';
                echo '<div type="text" class="', $field['class'], '" name="', $field['id'],'" data-default-color="', $field['default'],'" id="', $field['id'],'"', $meta ? '' : '', ' ></div>';
                break;
            ?></div><?php
        }
        echo     '</td><td>',
            '</td></tr>';
    }
    echo '</table>';
}

// Save metaboxes
function ks_save_pagedata( $post_id ) {
    global $header_meta;

    // Verify the nonce before proceeding
    if ( !isset( $_POST['ks_page_header_nonce'] ) || !wp_verify_nonce( $_POST['ks_page_header_nonce'], basename( __FILE__ ) ) )
        return $post_id;

    // If this is an autosave, our form has not been submitted, so we don't want to do anything
    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
        return $post_id;

    // Check the user's permissions
    if ( 'page' == $_POST['post_type'] ) {
        if ( ! current_user_can( 'edit_page', $post_id ) )
            return $post_id;
    } else {
        if ( ! current_user_can( 'edit_post', $post_id ) )
            return $post_id;
    }

    // Save data
    foreach ($header_meta as $field) {
        $old = get_post_meta($post_id, $field['id'], true);
        $new = $_POST[$field['id']];
        if ($new && $new != $old) {
            update_post_meta($post_id, $field['id'], $new);
        } elseif ('' == $new && $old) {
            delete_post_meta($post_id, $field['id'], $old);
        }
    }

}
add_action( 'save_post', 'ks_save_pagedata' );

image of the meta box

Thanks
Michael K.