It's similar what this guy posted on this forum he got the same complaint from Avast. I did a search for Avast JS:Packed T [trj] on Google and found this.
http://www.curse.com/forums/t/69161.aspxThis is what he posted:
"I was looking at GridManaBars when Avast popped up a virus, 3 times. Twice on the addon's page, and once on the download page. I just viewed the page again, but nothing there.
Here's Avast's log.
12/2/2008 7:11:31 PM SYSTEM 1132 Sign of "JS:Packed-T [trj]" has been found in "hxxp://76.74.154.110/zv00108/pdf.php?id=9702&vis=1" file.
12/2/2008 7:11:31 PM SYSTEM 1132 Sign of "JS:Packed-T [trj]" has been found in "hxxp://76.74.154.110/zv00108/pdf.php?id=9702" file.
12/2/2008 7:11:50 PM SYSTEM 1132 Sign of "JS:Packed-T [trj]" has been found in "hxxp://76.74.154.110/zv00108/pdf.php?id=9702&vis=1" file. "
Url looks similar from what I recall, it's traced back to valuepromo.net. Ad banners I assume?