I do not know how I got there, but I somehow got into a situation where I could push a button 'Refresh', or in Dutch 'Opfrissen'. Firefox then started to remove settings and extensions. Which is all well documented if you know it. But the user interface is just crap here. Especially in Dutch. Because 'opfrissen' is something that sounds totally innocent in my native language. I at most expected it to remove some cache memory. The last thing I expect pushing a button with that name is that it does what it did, without any warning! PLEASE change that. And please do not translate it with 'opfrissen', just explicitly say: Go back to standard configuration and remove extensions. I am not dumb that I could not understand what that should do. Opfrissen.... Pfff, please change at least the translation!

And I got really angry when it happened!