If I start-up my Mac and forget to switch on my Airport it brings up a box showing available networks. But when I then switch on my Airport, it finds my network but doesn't join it unless I click on it. If I do the same with my iPhone or iPad, when my network appears on the airwaves, they see it and join it without any input from me. So why won't my £1600 MacBook Pro? Is there a setting I've missed?