> I seriously doubt that we will ever see #2. And I am not sure > that it is a great model, anymore. Machines are cheap. UNIX > was built the way that it was because machines were expensive > and had to be shared. Alternatively an access-control-list (ACL) method like Windows NT uses could be implemented. That's one of the driving forces behind adding attributes to some Linux file systems. > In order to build #2, you would have to remove or, at least, > radically alter some of the functionality of the OS. areas > could not be mapped at will. There are some large security > holes in BeOS as far as multiple users at the same time. Yes, a big job. Need to assign ownership to all sorts of things. - Alex