Can you see if you might have a file: ~/.mozilla/plugins/libflashplayer.so. If you do remove it and sudo apt-get --reinstall install flashplugin-installer. Restart firefox and see if it is more stable.
Can you see if you might have a file: ~/.mozilla/ plugins/ libflashplayer. so. If you do remove it and sudo apt-get --reinstall install flashplugin- installer. Restart firefox and see if it is more stable.