Quick (doubtless dumb) question. Why don't my per-application access settings seem to "stick"? Let's say I want iTunes to accept incoming connections -- I go into system preferences/firewall and add it to the approved list. Because I'm not routinely running as an administrator, it will ask me to authenticate before making the change. Fine. But then, every time I restart iTunes it will still prompt me to approve an incoming connection and require me to authenticate yet again. This is tiresome. What am I missing?