I really hope you aren't one of the same people who say IE6 and IE7 have to die, and so web developers are right to try to force their users to use modern brows

I really hope you aren't one of the same people who say IE6 and IE7 have to die, and so web developers are right to try to force their users to use modern browsers. I work with the NHS in the UK; quite a few of the medical professionals are forced to use IE6 or IE7 because the hospital IT staff are managing their medical devices / desktops / network effectively, just as you say. When Firefox makes a decision like this, what they apparently did not seem to consider is that they are drawing a cutoff line which has serious costs to some of their users. I didn't see any discussion of this whatsoever in the issue thread. Imagine a relatively forward-thinking hospital that has been able to allow their staff to use fairly-recent versions of Firefox (once new versions have been vetted by IT). Changes like this may force them to stop deploying new versions completely, until some time possibly a decade from now when they're finally able to replace the Java-based UI.