The DS is the only display the vcard is connected to. But I did have another machine hooked up to the VGA input of the DS at the time. Would that still interfere you think?
I got mine from Newegg(via Cali) on Friday. Not really qualified to say if it has the polarizer - the screen changes to a dark reddish tint when viewed from extreme horizontal angles on a black background.(standing to the right and looking at the screen) - but I don't think I saw any green...