Yes. Flash crashes frequently on my Intel Mac (Flash CS3, OS 10.5.2, all
updates current). The crash is fatal. I get the spinning beachball of death in
Flash and _cannot_ force quit out of the app. The only solution is to force my
system to shut down.

I have seen no clear pattern to this problem -- except the frequency (which is
very high). Most recently it happened while moving a text block on the stage.

I have allmost the same problem, and can't find a pattern either. It happens
when I run a file, or just dubbleclick to select text in an actionscript
window. It happens very very frequently. The difference is that the code says:
KERN_PROTECTION_FAILURE