Seems Like you still can disable the background using 3Dgraphics. Maybe it is easier to change the bots to work in 3D then to work with background enabled :/
New DO anti-bot feature? CAPTCHA? 03/10/2011 - DarkOrbit - 47 Replies hey anyone seen captcha? well my bot got disconnected and when i tried to log in manually it asked for captcha after i entered correct captcha they reactivated my account.