I just recently installed Windows 7 RC.
I went to go get my Windows Experience Index score and after I clicked 'Run the Assesment' I was face to face with a blue screen. PAGE FAULT IN A NONPAGED AREA. It restarted and I tried again. Same thing.
I went to go change the screen saver, same blue screen. Restarted.
Double click on a picture I imported from my camera, same blue screen. Restarted. Clicked a different picture, same blue screen.
It has never happened randomly only when I do these certain things. I'm sure I'll click on something different and it will do it again.
This is a problem with Windows 7 it has never ever happened on my XP Prof in the years that I have used it.