I'm having serious problems. Today when I turned my macbook on, and started surfing the net, I realized I couldn't enter www.gmail.com & www.xanga.com. So far the other pages I frequent such as Facebook or Yahoo is working okay. Even while browsing Mac forums, the same thing came up and I had to refresh to get the page back. I realised that advertisements also have the error. Has anyone come across such a problem before? Because I'm really getting worried. And no, it's not the web pages problem because I turned on my desktop which is a windows and tried it, and it worked fine. ): Someone please help!