All I can say is that I was about to post that the new frisbee is totally broken before I remembered the Richard had mentioned this change...peebee wrote: I think the new way is so counter-intuitive that it will confuse people...
It is not obvious that ticking that box will make Frisbee spring into life - not to me anyway.
As I mentioned before the default should be on, unless you want to add a big "scan" button a la network-manager...