This bug may also be connected with this one:
https://bugs.launchpad.net/ubuntu/+source/flashplugin-nonfree/+bug/410407
Just a guess, but the sympthoms are the same.
This bug may also be connected with this one:
https:/ /bugs.launchpad .net/ubuntu/ +source/ flashplugin- nonfree/ +bug/410407
Just a guess, but the sympthoms are the same.