After I login to my email and check a few items, i am logged out and there is nothing wrong with my cookies.?

What is the problem??

After I login to my email and check a few items, i am logged out and there is nothing wrong with my cookies.?
I've been having the same problem, but when I click on the "re-login" link, it goes directly back to my mail home without needing me to login again. I've emailed and complained to Yahoo! about it since I followed all of their instructions. They've stated that they're looking into it...especially since I can prove it's not my pc, it's happening on every pc I've used and it's even happening w/ a few of my "buddies". Wait a few days and if it doesn't clear up, email customer care about it.
Reply:The problem is i think is that the cookies expire very quickly
Reply:Check under "Options" and then "Accont Information." You can change your settings under "Member Information" to only be prompted for your password once every 24 hours.