help with custom meta box

hi, i am writing my first plugin which will add a meta box to the post page, but i am having an issue with saving the data. The meta box appears fine, but when i save the post, the data is not stored. I have added my code below… if anyone can see where i am going wrong and can help it would be much appreciated.

function widget_featuredPost_createMetabox() {
	add_meta_box( 'feature-post-meta-box', __('Featured Post options'), 'widget_featuredPost_metabox', 'post', 'normal', 'high' );
}

function widget_featuredPost_metabox() {
	global $post;
?>
	<p>
		<label for="fp-image">Featured Image (URL to image):</label><br />
		<input type="text" name="fp-image" id="fp-image" value="<?php echo get_post_meta($post->ID, "fp-image", true) ?>" size="30" tabindex="30" style="width: 99%;" />
		<input type="hidden" name="fp-image_noncename" id="fp-image_noncename" value="<?php echo wp_create_nonce( plugin_basename( __FILE__ ) ); ?>" />
	</p>
<?php
}

function widget_featuredPost_saveMetabox( $post_id ) {
	global $post;

	if ( !wp_verify_nonce( 'fp-image_noncename', plugin_basename( __FILE__ ) ) ){
		return $post_id;
	}

	if ( 'page' == $_POST['post_type'] && !current_user_can( 'edit_page', $post_id ) ){
		return $post_id;
	}elseif( 'post' == $_POST['post_type'] && !current_user_can( 'edit_post', $post_id ) ){
		return $post_id;
	}

	$data = stripslashes( $_POST['fp-image'] );

	if ( get_post_meta( $post_id, 'fp-image' ) == '' ){
		add_post_meta( $post_id, 'fp-image', $data, true );
	}elseif ( $data != get_post_meta( $post_id, 'fp-image', true ) ){
		update_post_meta( $post_id, 'fp-image', $data );
	}elseif ( $data == '' ){
		delete_post_meta( $post_id, 'fp-image', get_post_meta( $post_id, 'fp-image', true ) );
	}
}

add_action( 'admin_menu', 'widget_featuredPost_createMetabox' );

add_action( 'save_post', 'widget_featuredPost_saveMetabox' );

?>