Just updated my Australian Internet Blackout WordPress plugin to version 1.0.
Version 1.0 makes use of the wp_enqueue_script() function to load the Blackout JavaScript. This should stop the double loading of jQuery, and avert possible conflicts (that is the theory anyway).
You can find the new version here:
You can also get later versions of WordPress to install it themself. Just search for ‘blackout’ on the ‘Add New‘ plugins page.