We have made a fix of Google Checkout scripts after release 3.2 has been issued.
 
Description.
There was a bug with VAT not calculating on the Google Checkout page.
 
Solution.
Please, download an updated version of the scripts from here:
http://www.viart.com/downloads/google_checkout.zip
Then extract the scripts into the /payments folder replacing existing ones. Don't forget to make a backup copy of the current files in case something goes wrong.