Hey there, I need help please! My wifi won't work on a MacBook Air and my iPhone after trying to access wifi in a cafe last night. The wifi in the cafe was password protected, I got the password from the staff, when I entered it into the MacBook Air the AirPort symbol started to go from grey to black in waves upwards (instead of reflecting the wifi strength) .. then it went all grey and an explanation mark appeared. Then I tried my iPhone, which appeared to accept the password also but then totally froze on me when I was in Safari. I had to reset my iPhone. I am now back home, where both the MacBook Air and the iPhone normally automatically connect onto the Wifi but neither are working. The MacBook Air is still showing the exclamation mark and the iPhone is generally confused.. as I am! Please help! ta, nat28