I switched over to Linux from Windows, but now when I try to play Zynga poker it doesn't work right. I can only play there if I run Windows in a Virtual Machine and play from there, but it's kind of slow. I read somewhere that people were able to solve this problem by installing the SeaMonkey browser in their system. I tried that but it doesn't work either. Flash is already installed.
I was also having the same problem. When I run the command the following command in terminal then it says "flashplugin-installer is already the newest version". But in Firefox I was unable to play poker.
Command which I ran in terminal:
Then I followed this YouTube video.
And now I seamlessly can play in Ubuntu too.