Help.. anyone?? My Macbook pro running Tiger 10.4.11 is now starting to randomly, what seems like shut the screen down, and just go to a black screen. I am running my macbook pro, plugged into the AC / Mains, with another monitor connected, when the macbookpro screen goes black the dual monitor stays up and running, I can even do the mirror screen from the actual macbook pro and run it on the dual monitor and its running perfectly (I hope this makes sense!). Its really odd and only started in the last few days.. it lasts about 30seconds at a time and is starting to worry me! Any answers to this?? All the best, Matt.