Great plugin. Just a note to say that the plugin generates a couple of warnings when WP_DEBUG is enabled in wp-config.php. They're both from networkpub.php:
- Line 1010 - I think you need a 'global' declaration before using $wp_version
- Line 1017 - It doesn't like the _FILE_ declaration for some reason
I'm using the latest version of the plugin on WP 3.1.3. Running on a Linux box.