Starting in Ubuntu 11.10 multi-arch is used for applications that formerly used ia32-libs.

gtalk & Google plus are the same plugin. They are are comprised of a 64-bit plugin plus a 32-bit daemon - and use the deprecated ia32-libs, it will be up to Google to update their package at some point.

Under Ubuntu 11.10 amd64 users should continue to use the 64-bit .deb available from http://www.google.com/chat/video on amd64 systems, as the 32-bit .deb cannot be used without additional modifications to the system at this time.

Once downloaded the plugin can be installed by either:

1. Clicking open in the browser;


2. Open the file manger, navigate to ~/Downloads and double click on the google plugin deb file;

Either method will open the Software Center to complete the installation. If you receive a dependency error, make sure you have selected Universe in your software sources.