I've had my 2006 MBP since June 2007 and could never get it to work in clamshell mode - lid shut but display on my HDTV. Then the other day, I cut it on while the lid was closed (done this before) and it WORKS !! 10.6.2 or what? I tried all the procedures before but it would never work. Now it does. Go figure. Anyway, now I finally don't have 2 screens to look at. Any comments?