Ubuntu
firefox package

  1. Bug #63570
  2. Comment #3

Comment 3 for bug 63570

Revision history for this message
Mateusz Drożdżyński (matid) wrote :

The package you should have installed is 'flashplugin-nonfree'. Please make sure it's there.

I also suggest trying to open the websites you've mentioned in the Safe Mode with all extensions disabled. You can open the browser in Safe Mode it by starting it with:
 firefox -safe-mode

Thanks in advance!