I have two Yahoo!Mail accounts setup and switch between them. I am supposed to be able to have both accounts open at the same time: one in FF, another in a different browser, like IE. But the account in FF is reverting to another account, which is open in IE by itself or every time I re-start FF. I tried everything, but nothing worked. So, I decided to use an account switcher option available in Yahoo: click on the account name, click on "add account", sign in to that account and now there are both accounts listed there, so it's easier to switch between them, if needed. But even this fix does not work in FF: I can do all that, but after I re-start FF, the second account is no longer there. Clearing cookies did not help either. IE does keep both accounts and I can switch between them. That seems to point to a FF problem, rather than to Yahoo itself. Please, help.