Welcome to the Forum 
We do not have that exact version of PVR in UK, but I guess it is based on our HDR T2 so would suggest it is a metadata problem, ie data transmitted by broadcaster is missing.
I do note that there is a software update available and the release note states ‘Improved Series Recording Service for SBS’
Do you have the latest version 1.08.09 uploaded?
http://www.humaxdigital.com/au/products/product_releases.php?gid=444&pid=6
Have you tried contacting Humax support via: ausupport@humaxdigital.com