The assertion is worded badly. It isn't the OS that crashes, it is only the Flash process (in OSX 10.6). In 10.5 it runs in the same process as Safari, so in

The assertion is worded badly. It isn't the OS that crashes, it is only the Flash process (in OSX 10.6). In 10.5 it runs in the same process as Safari, so in 10.5 the Safari browser crashes when Flash dies. Safari itself is impressively stable, even the pre-betas.