You got Sapphire? I guess I thought that Sapphire cards work. I guess I'm not right again. Anyway, I think we have chance because some people with Desktop version 46xx cards made it work. But sometimes I think we don't have a chance because it displays the same symptoms of an Mobility problems. As you know, mobility drivers are a pain since Leopard. Until now, there are no final solutions for HD mobility (4xxx). We'll I don't know but I think no one is fixing te 4xxx issues were having. We have no choice but to wait if they would even look in to it. After all, they are no obliged to help us Only time will tell. For now, I'll return mine and replace it with a weaker card (9400GT)