I am using Firefox and whenever I go to to a place with wifi and fast internet with my latest mbp 13", I can't look at any movies or video's on the internet or youtube. I can see it for 2 seconds, it freezes for a long time, then again 2 seconds, freezes etc. The internet connection is good and superfast,so I don't know what the problem could be and how to solve it. Any suggestions? Thanks!