No solution for you I guess but I just asked for a resend at http://www.avast.com/resend-license-free-antivirus.php and reply was immediate.
"Hello,
This message was sent to you because someone (hopefully you) filled in a license information request on http://www.avast.com/resend-license-free-antivirus.php. If you didn't apply for this license information, accept our apologies, and just ignore this message.
Your registration information:
User number: 9876543210
Name: Vladimyr
Email: xxxxx@xxxxxx.com
Generated: 2010-11-28
Expiration: 2011-11-28
Key: CXXXXXXXXXXXXXXXXXX-XXXXXXXX
–
ALWIL Software
http://www.avast.com/"