I currently have the 24" LED Cinema Display hooked up to my mac pro. It will randomly shut off and flicker on me once in awhile and it's very annoying. I tried installing the latest firmware but it didn't resolve the random blackouts. I am using a 10ft Mini display extension since my Mac Pro is down on the floor at the end of my desk. I've been thinking about upgrading to the 27" display. Does the 27 exhibit the same flickering and blackout problems as the old 24 when an extension cable is used? Anyone know?