For christmas 2010 I got a macbook, and ever since I got it I have had trouble with safari. The problem is that when I try to go to access webpages such as Facebook, Tumblr or even google docs among others, it has given me the message saying that safari can't establish a secure connection. In over a year, this hasn't changed. A few months ago, my family had to set up a new wireless network, and this brought no change. I even checked to see if these sites were blocked by...