I have the weirdest issue with my 2008 Macbook Pro 15" (Pre-Unibody). Once the computer fully warms up, the screen will sometimes go black (backlight will turn off; I can still see the desktop) and the only way to get it back to come on again is to move the screen around. While moving the screen though, the screen will flicker until you find the sweet spot. It seems that if the LCD is less than 90 degrees (i.e facing the keyboard), the flickering stops. Sounds like a loose cable right? But can you explain why the screen will not flicker until the computer warms up? I can move the LCD back and forth and I will not get a single flicker. Please help!