I recently got a new Macbook Pro (2.66/4GB) and a Mini DisplayPort to VGA Adapter to connect to my SyncMaster 226BW monitor. The first time I plugged it in the screen would come up for just a second and then go black, repeating constantly. I checked around some forums and the only thing that has worked is changing the System Preferences from Better battery life to High Performance. I was wondering if this is something you just have to do, or if I am doing something incorrectly?