This was recommended elsewhere and I tried it and it worked for me:Type about: config in the address bar Click “Accept the risk and continue”Type panel in the search bar, wait for the results to be displayed.Find highlighted browser.download.improvem...
I agree with the others. The automatic saving and the download pop-up are annoying. I much preferred the previous version of Firefox and would revert to it, if it was easy to do so (it isn't).