Out of date version of Flashplayer for Linux (.tar.gz)
My browser prompted me to update to Adobe Flash Player 11.2 or above.

2 big issues:
1. The "APT for Debian/Ubuntu" should provide text for the command to issue in the terminal instead of highlighting the "Download Now" button, which is antithetical to installing via apt.
2. I installed via the ".tar.gz for Linux" option, downloaded the file and issued the following:
cd ~/Downloads
tar -xzf flash_player_npapi_linux.x86_64.tar.gz
sudo cp libflashplayer.so /home/joe/.mozilla/plugins/libflashplayer.so
sudo cp libflashplayer.so /usr/lib/firefox/browser/plugins/libflashplayer.so
This did install and enable Flash Player for my Firefox browser, but https://helpx.adobe.com/flash-player.html indicated that I had version 10.1.999, not 11.2.

