Is there a place in Avast blog or forums that shows when and where a virus alert comes up as soon as it is found?
You mean discovered, detected?
I don’t think so… They’re busy trying to update the virus definitions 
Anyway:
Virus Monitor http://www.avast.com/virus-monitor
Virus Def History http://www.avast.com/virus-update-history-2010
And here’s the link for 2011… 
http://www.avast.com/virus-update-history
asyn