Why is my google chrome website not keeping me logged into Facebook?, 9.5 out of 10 based on 6 ratings

For the past few days my Google Chrome browser is not keeping me logged into websites. The problem is most persistent with Facebook. I have not changed any settings on the browser, I selected ‘Save password’ and ‘Keep me logged in’ on most of my favourite websites. but lately my browser is asking me to enter log in information again and again! please help!