Fixed:
+ Slowing down computer during installation, https://forum.avast.com/index.php?topic=189836.msg1332747#msg1332747
+ Unavailability to select other language during installation
you can download and install from here:
http://files.avast.com/beta9x/avast_free_antivirus_setup_online.exe
http://files.avast.com/beta9x/avast_pro_antivirus_setup_online.exe
http://files.avast.com/beta9x/avast_internet_security_setup_online.exe
http://files.avast.com/beta9x/avast_premier_antivirus_setup_online.exe
OR offline installers:
http://files.avast.com/beta9x/avast_free_antivirus_setup_offline.exe
http://files.avast.com/beta9x/avast_pro_antivirus_setup_offline.exe
http://files.avast.com/beta9x/avast_internet_security_setup_offline.exe
http://files.avast.com/beta9x/avast_premier_antivirus_setup_offline.exe
Avast cleaner:
http://files.avast.com/beta9x/avastclear.exe