Comment 20 for bug 60995

Arwyn, do you really want to disable all potantially dangerous keys and buttons? Firefox would become completely useless very fast if you go that route...

The possibility for data loss thing is a bug that should be fixed in a general way that doesn't harm usability; e.g. by asking the user if they really want to lose what they wrote in the form whenever they do something that might have that effect.

Throwing away day-to-day usability to mask (not fix!) a bug is never a good solution.