Yes, you can safely remove /var/cache/flashplugin-nonfree/install_flash_player_9.tar.gz . If you really need Flash, you can install it with sudo aptitude install flashplugin-installer
Yes, you can safely remove /var/cache/ flashplugin- nonfree/ install_ flash_player_ 9.tar.gz . If you really need Flash, you can install it with installer
sudo aptitude install flashplugin-