People who ‘ve been using "virusscan -a avg" might have noticed that this functionality got broken.
It is because Grisoft changed the url of the download page of their AVG rpm.
Luckily, TRK has the ability to adapt by contacting the trinityhome webserver and download the new url.
I ‘ve changed that url to point to the correct download page, gave it a try with TRK 3.2 and it seems to be working nicely.
One caveat however, against which I can ‘t do anything: the filesize of AVG rpm  has grown to 38Mb, which makes that your computer requires more RAM to execute it, since all is done in a ramdisk.
Anyway, good virus hunting with AVG!