Why do I have to sign in to my Yahoo email account almost everytime I go to it.?

I have checked to keep me signed in for 2 weeks, but it isn't working.

Why do I have to sign in to my Yahoo email account almost everytime I go to it.?
I HAVE SEEN THESE KINDS OF QUESTION OVER AND OVER LATELY





it must be a yahoo error


CONTACT YAHOO


http://help.yahoo.com/l/us/yahoo/mail/or...


http://help.yahoo.com/fast/help/us/mail/...


http://help.yahoo.com/l/us/yahoo/mail/or...


http://help.yahoo.com/l/us/yahoo/mail/ya...


CREATE FREE EMAIL ACCOUNT TO EMAIL THEM IF YOU HAVE TO


https://www.google.com/accounts/NewAccou...


http://get.live.com/mail/options