My custom made plugin has "a new version available", also the "view details" link links to a completely unrelated plugin.
The plugin files begins with:
<?php
/*
Plugin Name: Simple Contact Form
Plugin URI: http://www.wilcoverhoeven.com
Description: Simple contact form
Version: 1
Author: Wilco Verhoeven
Author URI: http://www.wilcoverhoeven.com
*/
How can I prevent this?