For several months now I have a small program on my system wich I use to learn pronunciation of chinese tones (PinYin).
Today avast picked the file I downloaded from
http://www.eztechinc.com/product_list.php?id=4 up claiming it has Win32:Troja-gen {UPX!}.
Previous versions of avast did not bark on this file. But the latest Beta version 4.7.881 (running on on XP.Pro.SP2) with up to date 0636-3 VPS does. The file has been sitting on my hard drive for several months and until today avast never picked it up during a full scan.
When trying to re-download the file, avast resets to connection to to server and claims the very same trojan is in the file.
It appears I can not send the file to avast for testing from the virus chest: "The following file cannot be sent by email:
npinyin.exe (FileID: 5). The file is bigger than the limit: 1024 kB"