I shut my macbook pro down the other day and when I turned it on the next day, I couldn't get on Safari. It would constantly say that it couldn't find an internet connection. I tried to check to see if I could do an update, and same problem. Here is the kicker. Mail, iChat, and Firefox all work fine. The only applications affected that I can find so far are iTunes, Safari, and Automatic Update. If someone can help me fix this problem, I would really appreciate it.