User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008040504 Minefield/3.0pre Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008040504 Minefield/3.0pre I started my minefield nightly - 2008040404 (I think, it upgraded so I don't know) it displayed two notifications in my tray. They overlapped, luckily the back one was longer so I was able read part of it. One was that there was an update for Firefox, the other was that one of my extensions would be disabled by the update (I think). They could either stack or wait for each other. Also I think the display time is a little short. Reproducible: Always Steps to Reproduce: 1. Load old version of firefox (one that will download an update) 2. Have an extension not compat with newer version 3. apply update 4. restart

Bulk move to Toolkit::Notifications and Alerts Filter on notifications-and-alerts-component.