If you are having problems updating through the Update Manger go to this link and download the three new updates and put them in your AVG6\Updates folder and open AVG6 and it will automatically update.
These contain the I-Worm/Swen detection updates.
http://www.grisoft.com/us/us_updt6.php?lng=fe
These contain the I-Worm/Swen detection updates.
http://www.grisoft.com/us/us_updt6.php?lng=fe