Why does Yahoo! keep signing me out?

my yahoo email keeps signing me on auto. when i check my mail

Ok While on yahoo it keeps signing me in and out for no apparent reason. I dont know if its because of a bug or what. Signs out and then right back in many times. Also I have a problem when somone sends me a message i sometimes dont get them were are...

I log in, and the keep logged in button is checked, and then whenever I close my browser and go back to the Yahoo homepage it signs me out. Any way to fix this without keep signing back in?

yahoo keeps signing me out saying lm signing in from another omputer or device when lm at home useing my lap-top with my own internet connection

I have Yahoo Messenger version 9.0.0.2162 and it keeps signing off and then signing back on about 15 seconds later. It does this several times a day. Any ideas?

I'm on yahoo mail and get signed out of yahoo messenger saying I was on another computer

Every time I close my browser,it signs me out of yahoo and I have to sign back in when I open my browser. I checked to make sure that mozilla is accepting cookies from yahoo and it ...show more

this only started happening today, and it's so irritating! grrrr! i used to be able to just sign into my yahoo mail and keep offline in messenger. but today, when i sign it keeps ...show more

Every time I sign in to yahoo, I click 'Keep me signed in' but the next time I open yahoo, I'm unsigned. Why? How to fix this??? Tell me.