When I sign in to Yahoo mail on the first tab, it works fine. When I open an additional tab, it always asks "please verify your password". In the past, I have always been able to open a new tab and stay signed in. I had to reinstall Win xp and now it always prompts for my password when opening a new tab. I have tried clearing cache, history, cookies and still have the issue. I tried different versions of FF, including FF15 and16 and none work. I have also tried restoring FF to default setting and restarted with add ons disabled. Additionally, I tried setting the network connection to "no proxy". Nothing has worked. Any other suggestions? Thanks. IE and Chrome work fine and I do not have this issue.