well,i am using 4 ATI Radeon Hd 3650 for multihead display on 4 screens ..
i am using one card for each display(means each card is managing one screen)
now when i am using this scenarion with vista and when i'll expand my video, the video get hang.it smoothly runs if i play it on one screen only but get hang when try to strech the video to multiple screen..
But when i change the Operating System i.e Windows XP this problem get resolved a lil bit ..as in now we can expand the video to multi screen.
Where is the Problem??is it in internal architecture or in the Vista??