Wha's wrong with Youtube?!?!?!?!?!?!

Well I'm a little concerned. Youtube changed everything!!!!!!!!!!!!!!!! On their website that is(although the former is correct too). So I'm on Youtube on Wedenesday and then i get on today(which is friday) and everything is all messed up! Its all like weird. And ist making the videos run slower. Its madness! Of course, Im upset because I love youtube and they jacked it up!!!!!!!!!!!!!!