Installing and activating WP-Ad-Manager breaks WordPress' media uploader. When trying to upload/insert an image anywhere in the admin, instead of showing the uploader in the window overlay --- it shows a window asking "Are you sure you want to do this?" If you click "yes", it loads the entire WordPress admin page within the overlay window.
You can do this over and over again within the overlay window to infinity. The media uploader never loads. Deactivating and deleting WP-Ad-Manager fixed the issue for me. Any thoughts on why this is happening?