You are playing a game on Facebook or watching a video on YouTube and you notice that your mouse clicks aren’t registering inside the flash object. It worked before Ubuntu 9.10, but doesn’t work now…well we have a workaround.
Alex Knoll suggested this fix on Launchpad:
“I found a workaround for this problem for those who have amd64 installations. Remove all existing flash plugins and download the 64-bit alpha prerelease from adobe’s website here. Then extract the plugin to ~/.mozilla/plugins/ (you might need to create the plugins folder) and it should work fine again (mine actually runs faster and smoother than it ever did before)
It worked well for me and I would agree with Alex, it runs faster and smoother.
If you are not sure where ~/.mozilla/plugins/ is, go to your home folder, click View from the menu, then click Show Hidden Files, then look for the .mozilla folder.
UPDATE: If that doesn’t work, try this…
sudo gedit /usr/lib/nspluginwrapper/i386/linux/npviewer
Add this before the last line of text “export GDK_NATIVE_WINDOWS=1″
Note this is only for x64 machines/installs.
Make sure you restart FireFox once you make the change.