mount points not special

[David N. Blank]

Actually, I kind of expected this to be "normal" behavior, but was
looking for a trick to prevent it (or discussion on what could be 
added to the opsys which to prevent you from shooting yourself
in the foot).  The user in question actually has root privs on that
machine (not my decision), and blew it under that auspice.  How about
having a message like "Directory busy" appear while leaving the
directory intact, similar to the one you receive when you attempt to
remove a directory which still has files in it?  
                Peace,
                  dNb