Earlier my internet conked out on me so I unplugged the router/modem and plugged it back in, which fixed the issue. I opened Firefox back up and X-notifier checked my e-mail like normal. Then I got a notification on my phone for one of my accounts that there had been a new sign in from Firefox. When I checked my other Gmail accounts with X-notifier they all had the same e-mail. It was very odd for that to happen. It's never happened with X-notifier before. And when I checked the history, all my logins were from my regular browser, but the IP address was not an IP address.