My Avast! free antivirus is about to expire and I cannot renew my license, I press the select for the free version (Base protection/avast! free antivirus) on the dialog and it’s not responding. The dialog for entering the details is not appearing.
Avast! Free antivirus in Hebrew 6.0.1289
http://forum.avast.com/index.php?topic=87519.0
http://www.avast.com/en-us/resend-license-free-antivirus.php
If that is not enough, then: http://www.avast.com/en-us/registration-free-antivirus.php
In either case, check for your incoming email or your junk email folder (in case, for whichever reason, it gets there)