I have Internet Security 2012 and the build number in About is showing as 15.0.27.322.
In a recent post a user reported a version number for bdtl.dll of 15.0.27.308 and was told to update and reboot to get the most recent file (15.0.27.333). After the update the user reported "I've updated and restarted: version is still 15.0.27.308."
This prompted me to check my bdtl.dll and I found version 15.0.27.318 which is also not the latest. This surprised me as I run Bitdefender update at least once a day and also reboot daily. On examining all program files (*.exe, *.dll) in C:\Program Files\Bitdefender\Bitdefender 2012 and C:\Program Files\Common Files\Bitdefender I cannot find any with a modification time later than 09:56 30-Aug-2011 which is precisely when I reinstalled BitDefender to fix the "you can't have any more updates because you haven't configured an account" problem.
According to this I should have received new files on 2-Sep-2011 and 8-Sep-2011
If program file updates were being delivered correctly would I not see at least one later than 30-Aug. I am seeing regular data updates.