Why do the Facebook pages keep refreshing

Now a days more than 50 % of the Facebook users are having a serious problem while using Facebook .
The Facebook page keep refreshing as you are keep pressing F5 . Because of this you cannot chat and do other things on Facebook as you have enjoyed in the past .
Most of the people are blaming their browsers for this problem but actually its a technical problem which Facebook is having these days and it is very disappointing for Facebook users because now a days Facebook have many problems and they are not trying to solve these problems nor they are replying or even reading their page discussions to know what are the problems and to solve them as soon as possible .
But the good news is that the page refreshing problem has been solved and now it is not refreshing . Hoping for better service from Facebook in future.