Hello,
I noticed that avast Linux free edition is only available in English and Czech,I would be more than glad to translate it into French since it is my first language.Just ask 
Thank You
MounierNetwork
In fact there are bulgarian, portuguese (brazilian) and finnish translations either…
http://forum.avast.com/index.php?topic=20142.msg176534#msg176534
Hope Dublin or Igor can help you on French translation