Having problem watching video on youtube

I'm having problem in watching video on youtube. Sometimes it can been connected to the website and something it won't get to the server. I just don't get it what actually happen. I've read review over the website that there are also other people having problem in watching video on youtube. Maybe youtube is doing website maintenance or something else to upgrade the website for more user friendly or something else. I just hope that it can get back as soon as it possible.