We'll create fresh WordPress site with WordPress/MU Favicon installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin is based off of code from John Kolbert and his plugin, Admin Favicon. While that plugin sticks a favicon only into the admin pages, this plugin was designed so that it would stick a favicon on every blog and every administrative page. Consider it basically a Site-Wide Favicon. It’s useful for community sites that want to apply a favicon sitewide. As of now, unfortunately you need to manually enter the location of the favicon. Soon there will be an admin interface set up for it.