Avast! infected?

Infection Details
URL: http://download117.avast.com/iavs5x/servers.def.vpx
Process: file://C:\Program Files\AVAST Software\Avast\setup\avast.setup
Infection: al
Tak tohle bylo těsně, ale už je všechno v pořádku …
Is it possible ???
What is infection al ??

Read this: http://forum.avast.com/index.php?topic=93599.msg745237#msg745237

(al should be Url: Mal | A small glitch on avast’s case)