MCAFEE ANTIVIRUS UPDATE QUESTION....

Question

what is the difference b/w update DAT AND SDAT

Answer 1

The SuperDAT utility allows you to upgrade your scanning engine and your virus signature (DAT) files. The regular DAT (X-DAT) utility only updates the DAT files. New engines are only created as needed, approximately every 3 to 6 months, so updating with the SuperDAT is not always necessary.  

Answer 2

It means that your antivirus program is updating automatically.