Adobe flash on Google Chrome, Ubuntu

If you are not able to see Youtube videos on Google chrome, then probably your flashplayer is not working properly.

For 64 bit machines, download the Adobe flashplayer from this link.
For 32 bit machines, download from here.

Extract from the tar ball :

$ tar -xzvf libflashplayer-10.0.45.2.linux-x86_64.so.tar.gz

make a directory :

$ sudo mkdir /opt/google/chrome/plugins

$ sudo cp libflashplayer.so /opt/google/chrome/plugins

$ google-chrome --enable-plugins

You can change this command in your application menu as described here.