This morning, I did a full scan on my Windows 7 computer with BD Antivirus Plus 2013.
The scan was very fast in comparison to Avira AV that I used to have on the same computer.
It took BD Antivirus Plus 2013 only 29 minutes to complete. A full scan when my previous AVIRA AV used to take about 2 hours.
The BD Log File showed the following:
================================
Product : Bitdefender Antivirus Plus 2013
Scanning task : System Scan
Scanned items : 1111852
Infected items : 0 (no infected items have been detected)
Suspicious items : 0 (no suspected items have been detected)
================================
About 15 minutes later, I got a message from the BD Antivirus Events that
"BD Antivirus 2013 found and deleted one infected file: Microsoft\MBSA\Cache\wsusscn2.cab. Your computer is virus-free".
I've checked on-line for more information about mbsa wsusscn2.cab.
Here is what I found:
http://technet.microsoft.com/en-us/security/cc184924.aspx
"Microsoft Baseline Security Analyzer (MBSA) checks for operating system and ... or in a secure environment, from an offline catalog file named Wsusscn2.cab."