https://mail.yahoo.com/|https://addons.mozilla.org/

That's annoying! It's a little too easy to end up with multiple "home tabs". To check on that, you can use the Options page as described in this article: [[Startup, home page, tabs, and download settings]]. Look for a vertical bar character in the middle of the field separating two addresses. As a simple example with short URLs: https://mail.yahoo''.''com/|https://addons.mozilla''.''org/ The bar definitely can be hard to spot with long URLs, but when you find it, delete everything to the right of the bar and then the bar itself (I suggest deleting the bar last so things don't accidentally get mushed together). Does that help?