Yesterday, i received my new 27" ACD. This display is amazing! I use it on my Mac Pro 2008. No dead pixels, audio is working and iSight worked too. But after installing the "Software-Update for LED Cinema Display 1.0" my iSight is not working anymore! Only black video window in iChat and FaceTime. And the green LED next to the iSight is off. Seems that the iSight is not starting. What should I do? Thanks!