I’m writing today to ask for your help with dogfooding Firefox 21.0b6. There have been several changes lately to address stability concerns related to plugins. We need your help to determine if these changes have caused any regressions.
All that you need to do is download and install the Beta and use it as your day-to-day browser for the next few days. If you encounter any issues with plugins (Flash, Java, Silverlight, etc) please reply to this thread immediately describing the issue, any loaded URLs, and the plugin versions you have installed.
Alternatively, you can find me (ashughes) on IRC (irc.mozilla.org) in the #qa channel.