message is the correct username as well.

The normal browser process, of course, is that when you click on the Firefox icon it opens the browser and automatically signs you in to your preselected home page. Unfortunately I have recently run into a problem with error messages popping up and obstructing this opening process. Special comment: It started occurring at about the same time my Yahoo mail account was breached and spammed and I had to change my password as a beginning move to counter the account security breach. I am not certain this incident produced my current problem, but it quite possibly related to the cause. It still remains that have to clear the problem, whatever caused it. These error pop up messages do not occur when I use the Internet Explorer or Chrome browsers, so it certainly appears to be a Firefox browser related issue. I have tried clearing all cookies, enabling and disabling all Java plug-ins and extensions, changing passwords, and nothing has had any effect. The first pop up window is headlined as, "[JavaScript Application]. It then cites my correct Yahoo username and is followed by this text; "(my username)- Invalid username/password combination. If you continue to get this error, try entering your email address as your username". Note: Entering my email address as a username did not help either. The username cited in the error message is the correct username as well. The second pop up window says, "We noticed you may have signed in or signed out in another window. Click OK to reload your page". Note: Clicking the "OK" button does not re-sign in the page. What does happen is that it reloads the generic MY Yahoo home page and then I have to manually sign in to get my personally customized My Yahoo home page. I have since upgraded to the most current Firefox browser version, but the problem remains the same. If anyone has any idea on how to remedy this sign-in issue I would appreciate hearing from you. Thank you