I found this little snippet on Norcross blog. It will save me a lot of agreviation in the future with the anchor tags to the attachment page or media file.
add_action('admin_init', 'ws_imagelink_setup', 10); function ws_imagelink_setup() { $image_set = get_option( 'image_default_link_type' ); if ($image_set !== 'none') { update_option('image_default_link_type', 'none'); } }