Do you get a bar sliding down between the toolbar area and the page? These bars can relate to pop-ups, redirects, plugins, and other things, so it would be useful to know more specifically which one you're seeing.

If it's a separate pop-up message, that's strange. What is the wording of it, or could you post a screen shot? This article has suggestions on screen shots: How do I create a screenshot of my problem? Please blur or cut out any sensitive information in your image editor (e.g., the Windows Paint program) before attaching it to your reply.

Yes, it is a bar between the toolbar area and the page. It says: "Firefox prevented this page from automatically redirecting to another page." With the "allow" button over on the right side. It's very annoying that it pops up when I open my emails.

thanks, this warning isn't turned on by default. in order to switch it off again, go to the firefox menu ≡ > options > advanced > general and disable "Warn me when websites try to redirect or reload the page".

Thank you. I think it's fixed.  :-)