I had to reset Firefox to try to fix another software issue (which it didn't fix btw) and after the reset every time I open Firefox I get a 2nd tab for Yahoo asking me to log in to my Yahoo account even though I never sign out. I check the Keep me signed in box, enter my password and click sign in and then the next time I open Firefox I have to go through the process all over again because the Yahoo tab opens up AGAIN! I'm using the Yahoo Mail Notifier extension for Firefox but I've used it for years with no problems. I saw somewhere else that someone suggested going into the Options and the Privacy tab and under History making sure it was set to Use Custom Settings for History and that Use Private Browsing Mode was NOT checked and that Keep Cookies was set to Keep Until Firefox Closed with an exception for Yahoo. But mine was set to Remember History. However, when I set it to Use Custom the Private Browsing Mode wasn't checked, the cookies are set to Keep Until they Expire and there's a box to Clear History when Firefox Closes and it's NOT checked. Does anyone have any suggestions for what might be causing this? It's really frustrating!